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1936
African Bees of the Genus Nomioides, T. D. A. Cockerell; American Museum Novitates
African Hylaeine Bees, T. D. A. Cockerell; American Museum Novitates
Bees from British Guiana, T. D. A. Cockerell; Journal New York Entomological Society
Bees from Northern California, T. D. A. Cockerell; The Pan-Pacific Entomologist
Bees from the Solomon Islands, T. D. A. Cockerell
Descriptions and Records of Bees - CLII, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLIII, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLIV, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLV, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLVI, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLVII, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLVIII, T. D. A. Cockerell; Annals and Magazine of Natural History
Materials for a Monograph of African Bees of the Genera Halictus, Ceratina and Megachile, T. D. A. Cockerell
Records of Western Bees, T. D. A. Cockerell; American Museum Novitates
Some African Anthidiine Bees, T. D. A. Cockerell; American Museum Novitates
Some African Bees, T. D. A. Cockerell; American Museum Novitates
Some African Osmiine Bees, T. D. A. Cockerell; The Entomologist
The Bees of Alberta I, T. D. A. Cockerell; The Canadian Entomologist
Two New Bees from Hay River, T. D. A. Cockerell; The Canadian Entomologist
Sterility in Pears, M. B. Cummings, E. W. Jenkins, and R. G. Dunning
Hymenopters gynandromorphes, Jacques de Beaumont; Bull. Soc. Vaud. Sc. Nat.
Einige Biologische Beobachtungen Über die Bienen und Wespen Mikronesiens, Teiso Esaki; Mushi
New Californian Osmiinae (Hymen., Megachilidae), Charles D. Michener; Bulletin of the Southern California Academy of Sciences
On Certain Halictidæ from Northern California, Charles D. Michener; The Pan-Pacific Entomologist
Some Bees of the Genus Ashmeadiella, Charles D. Michener; The Pan-Pacific Entomologist
Some Bees of the Genus Halictus, Charles D. Michener; Annals and Magazine of Natural History
Some California Bees, Townsendiella and Hesperapis (Hymen: Apoidea), Charles D. Michener; Entomological News
Some North American Osmiinae (Hymenoptera, Apoidea), Charles D. Michener; American Museum Novitates
Some Western Anthophoridae (Hymen.), Charles D. Michener; Bulletin of the Brooklyn Entomological Society
Some Western Anthophorid and Nomiine Bees, Charles D. Michener; American Museum Novitates
Some Western Bees of the Genus Osmia, Charles D. Michener; The Canadian Entomologist
Western Bees of the Genus Ceratina, Subgenus Zaodontomerus, Charles D. Michener; American Museum Novitates
Bulletin of the Southern California Academy of Sciences, Vol. XXXV Part 2, Robert H. Palmer, Leo George Hertlein, Fred B. Phleger Jr., Charles D. Michener, Lloyd M. Martin, John Adams Comstock, Charles M. Dammers, C. R. Bruck, and Louis C. Wheeler; Southern California Academy of Sciences
1935
Beitrag zur Kenntnis der Bienenfauna von Kleinasien, J. D. Alfken; Separat-Abdruck der Entomologischen Rundschau
Beitrag zur Kenntnis der Bienenfauna von Palastina, J. D. Alfken; Veroff. Dtsch. Kol. Mus. Bremen
Die Bienen Nordwestdeutschlands als Blutenbesucher, J. D. Alfken; Abh. Nat. Ver. Bremen
Ueber die Rassen zweier Anthidium-Arten aus Ungarn, J. D. Alfken
North American Wasps of the Genus Neotiphia (Hymenoptera: Tiphiidae), H. W. Allen; Transactions of The American Entomological Society
Factors Influencing Seed-Setting in Alfalfa, J. M. Armstrong and W. J. White; The Journal of Agricultural Science
Descriptions d'especes nouvelles palearctiques du genre Heriades, R. Benoist; Bulletin de la Société Entomologique de France
Remarques Sur Quelques Especes du Genre Megachile, R. Benoist; Ann. Soc. Entomol. France
Additions and Corrections to the Revision of North American Vespinae (Entomologica Americana, 1932), Joseph Bequaert; Bulletin of the Brooklyn Entomological Society
The Bees of the Group Dieunomia, Beulah Hix Blair; Journal of the New York Entomological Society
Sobre Alguns Cynipideos Parasiticos e Cecido-Genos Do Brasil (Hymenoptera, Cynipidae), T. Borgmeier; Archives do Instituto de Biologia Vegetal
Studies in Bee Activity During Apple Bloom, W. H. Brittain; Journal of Economic Entomology
African Bees of the Genera Allodape and Allodapula, T. D. A. Cockerell; Rev. Zool. Bot. Afr.
African Bees of the Genus Coelioxys, T. D. A. Cockerell; Rev. Zool. Bot. Afr.
African Bees of the Genus Gronoceras, T. D. A. Cockerell; Annals and Magazine of Natural History
African Nomiine Bees, T. D. A. Cockerell; Rev. Zool. Bot. Afr.
American Bees of the Genus Gronoceras, T. D. A. Cockerell; American Museum Novitates
Bees from Eritrea, Northwest Africa, T. D. A. Cockerell; American Museum Novitates
Bees of the Genus Megachile from the Belgian Congo, T. D. A. Cockerell; American Museum Novitates
Descriptions and Records of Bees - CL, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CLI, T. D. A. Cockerell; Annals and Magazine of Natural History
New Records of Bees, T. D. A. Cockerell; American Museum Novitates
Parasitic Bees of the Genus Coelioxys from the Belgian Congo, T. D. A. Cockerell; American Museum Novitates
Records of African Bees, T. D. A. Cockerell; The Entomologist
Scientific Results of the Vernaylang Kalahari Expedition, T. D. A. Cockerell; Annals of the Transvaal Museum
Some African Nomiine Bees, T. D. A. Cockerell; Annals and Magazine of Natural History
Some California Bees, T. D. A. Cockerell; Pan-Pac. Ent.
The Carpenter Bees of the Galapagos Islands, T. D. A. Cockerell; Proceedings of the California Academy of Sciences
The Origin of the Higher Flowering Plants, T. D. A. Cockerell; Science
Cuarenta y Cinco Años en Busca de Himenópteros en España. Excursiones, Consejos y Resultados, José María Dumset Y Alonso; Memorias de la Sociedad Entomológica de España
Spiders from the Southwestern United States, with Descriptions of New Species, W. J. Gertsch; American Museum Novitates
A Note on Dianthidium Singulare Perluteum T. & W. Ckll., Charles D. Michener; The Pan-Pacific Entomologist
Bees from Costal Northern California, Charles D. Michener; The Pan-Pacific Entomologist
1934
Beitrag zur Kenntnis der Coelioxys-Arten von Aegypten. (Hymenoptera-Apoidea), J. D. Alfken; Bull. Soc. Ent. Egypte.
Beitrag zur Kenntnis der Crocisa-Arten von Aegypten, J. D. Alfken; Bull. Soc. Ent. Egypte.
Beitrag zur Kenntnis der Megachile-Arten von Aegypten, J. D. Alfken; Bulletin de la Societe Royale Entomologique d' Egypte
Ueber die Farbungsabanderungen bei Camptopoeum friesei Mocs., J. D. Alfken; Konowia
The Genera Halictus and Andrena in Western Nova Scotia, C. E. Atwood; Canadian Journal of Research
Descriptions d'especes nouvelles d'Hymenopteres Melliferes, R. Benoist; Bulletin de la Société Entomologique de France
Descriptions d'especes nouvelles palearctiques d'Hymenopteres Melliferes, R. Benoist; Bulletin de la Société Entomologique de France
Color variation in the South American social wasp, Polistes versicolor (Olivier) (Hymenoptera, Vespidae), Joseph Bequaert; Rev. de Entomologia
Das Weibchen von Crabro (Crossocerus) denticoxa Bisch. (Hym. Spec.), H. Bischoff; Mittheilungen. D. Entomol. Gesellschaft
Gedanken zu einem natürlichen System der Bienen (Hym. Apid.), H. Bischoff; Deutsche Entomol. Zeitschrift
Descriptions of Two New and One Previously Known Species of Ampulicidae (Hymenoptera) From the Neotropical Region, James Chester Bradley; Revista de Entomologia
Records of Ampulicidae (Hymenoptera: Sphecoidea), James Chester Bradley; Entomological News
The Status of the Genus Rhinopsis, with Description of a New Species from Texas (Hymen.: Ampulicidae), James Chester Bradley; Entomological News
Further Observations on the Pollen Constancy of Bees, W. H. Brittain and Dorothy E. Newton; Canadian Journal of Research
Descriptions and Records of Bees - CXLIX, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CXLVII, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - CXLVIII, T. D. A. Cockerell; Annals and Magazine of Natural History
New and Little-Known Western Bees, T. D. A. Cockerell; American Musueum Novitates
New and Little-Known Western Bees, T. D. A. Cockerell; American Museum Novitates
October Bee-Collecting in Colorado (Hymenoptera: Apoidea), T. D. A. Cockerell; Entomological News
Parasitic Bees (Epeolinæ and Melectinæ) in the Collection of the California Academy of Sciences, T. D. A. Cockerell; Proceedings of the California Academy of Sciences
Records of Western Bees, T. D. A. Cockerell; American Museum Novitates
Records of Western Bees, T. D. A. Cockerell; American Musueum Novitates
Some Bees (Hym.) from the Sudan, T. D. A. Cockerell; STYLOPS: A Journal of Taxonomic Entomology
Some Bees of the Genus Ceratina from Africa, T. D. A. Cockerell; American Museum Novitates
The Bees of Australia, T. D. A. Cockerell; Australian Zoologist
The Wild Bees, T. D. A. Cockerell; The Journal of The American Museum of Natural History
Two New Bees from Colorado, T. D. A. Cockerell; Bulletin of the Brooklyn Entomological Society
Notes on American Crab Spiders (Thomisidae), W. J. Gertsch; American Museum Novitates
1933
Beitrage zur Kenntnis der Untergattung Pseudomegachile Friese, J. D. Alfken; Konowia
Beitrage zur Kenntnis palaarktischer Bienen. (Hym. Apid.) 2. Beitrag, J. D. Alfken; Deutsch. Ent. Zeitschr.
Beitragezur Kenntnis palaarktischer Bienen. (Hym. Apid.) 3. Beitrag, J. D. Alfken; Deutsch. Ent. Zeitschr.
Beitrage zur Kenntnis palaarktischer Bienen. (Hym. Apid.) 4. Beitrag, J. D. Alfken; Mitt. D. ent. Ges. Jahrg.
Ergebnisse einer zoologischen Sammelreise nach Brasilien, insbesondere in das Amazinasgebiet, ausgefuhrt von Dr. H. Zerny, J. D. Alfken; Annalen des Naturhistorischen Museums in Wien