TY  - BOOK
AU  - Milliron H.E.
TI  - A Monograph of the Western Hemisphere Bumblebees (Hymenotera:Apidae;Bombinae) II The Genus Megabombus Subgenus Megabombu
U1  - 595,715 MIL 
PY  - 1973///
CY  - Canada
PB  - The Entomological Society
ER  -