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  • Categoría:Listas bibliografía Categoría:Bibliografía Sneath, P. H. A. & R. R. Sokal, 1973. Numerical Taxonomy – The principles and practice of numerical classification. Freeman & Co., San Francisco. Snelling, R. R. 1956. Bees of the genus Centris in California. Pan-Pacific Entomologist 32: 1-8. Snelling, R. R. 1966a. Studies on North American bees of the genus Hylaeus, 1. Distribution of the western species of the subgenus Prosopis with description of new forms. Contributions in Science, Los Angeles County Museum of Natural History no. 98: 1-18.
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  • Categoría:Listas bibliografía Categoría:Bibliografía Sneath, P. H. A. & R. R. Sokal, 1973. Numerical Taxonomy – The principles and practice of numerical classification. Freeman & Co., San Francisco. Snelling, R. R. 1956. Bees of the genus Centris in California. Pan-Pacific Entomologist 32: 1-8. Snelling, R. R. 1966a. Studies on North American bees of the genus Hylaeus, 1. Distribution of the western species of the subgenus Prosopis with description of new forms. Contributions in Science, Los Angeles County Museum of Natural History no. 98: 1-18. Snelling, R. R. 1966b. Studies on North American bees of the genus Hylaeus, 2. Description of a new subgenus and species. Proceedings of the Biological Society of Washington 79: 139-144. Snelling, R. R. 1966c. Studies on North American bees of the genus Hylaeus, 3. The nearctic subgenera. Bulletin of the Southern California Academy of Sciences 65: 164-175. Snelling, R. R. 1966d. A new species of Heteranthidium from California. Contributions in Science, Los Angeles County Museum of Natural History no. 97: 1-8. Snelling, R. R. 1967. Description of a new subgenus of Osmia. Bulletin of the Southern California Academy of Sciences 66: 103-108. Snelling, R. R. 1968. Studies on North American bees of the genus Hylaeus, 4. The subgenera Cephahylaeus, Metziella and Hylaeana. Contributions in Science, Los Angeles County Museum of Natural History no. 144: 1-6. Snelling, R. R. 1969. The Philippine subgenus Hoploprosopis of Hylaeus. Contributions in Science, Los Angeles County Museum of Natural History no. 171: 1-5. Snelling, R. R. 1970a. Studies on North American bees of the genus Hylaeus, 5. The subgenera Hylaeus s.str. and Paraprosopis. Contributions in Science, Los Angeles County Museum of Natural History no. 180: 1-59. Snelling, R. R. 1970b. The Hylaeus of the Bonin Islands, western Pacific Ocean (Hymenoptera Colletidae). Bulletin of the Southern California Academy of Science 69(1): 1-19. Snelling, R. R. 1974. Notes on the distribution and taxonomy of some North American Centris (Hymenoptera: Anthophoridae). Natural History Museum of Los Angeles County, Contribution in Science no.259: 1-41. Snelling, R. R. 1975a. Taxonomic notes on some colletid bees of western North America with descriptions of new species. Contributions in Science, Los Angeles County Museum of Natural History no. 267: 1-9. Snelling, R. R. 1975b. Range extension of two Heteranthidium, with description of Heteranthidium cordaticeps male (Hymenoptera: Megachilidae). Proceedings of the Entomological Society of Washington 77(1): 87-90. Snelling, R. R. 1980a. New bees of the genus Hylaeus from Sri Lanka and India. Contributions in Science, Natural History Museum of Los Angeles County no. 328: 1-18. Snelling, R. R. 1980b. The bee genus Bicornelia (Hymenoptera: Colletidae). Contributions in Science, Publ. Natural History Museum of Los Angeles 327: 1-6. Snelling, R. R. 1981. Systematics of social Hymenoptera. 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