TY - BOOK T1 - Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymenoptera, Apoidea) / DA - 1980. CY - Washington : AU - Hurd, Paul D. CN - QL1 CN - QL1 CN - QL567.1.S68 PB - Smithsonian Institution Press, PP - Washington : PY - 1980. ID - 24818 KW - Bees KW - Bees KW - Helianthus. KW - Insect-plant relationships. KW - Insects KW - Insects TI - Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymenoptera, Apoidea) / ER -