TY  - BOOK
AU  - Hurd,Paul David
AU  - LeBerge,Wallace E.
AU  - Linsley,E.Gorton
TI  - Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymenoptera, Apoidea)
PY  - 1980///
CY  - Washington
PB  - Smithsonian Institution Press
ER  -