TY  - BOOK
AU  - Williams,Paul H.
ED  - Project Muse.
TI  - Bumble bees of North America: an identification guide 
SN  - 9781400851188
PY  - 2014///
CY  - Princeton, NJ
PB  - Princeton University Press
KW  - Electronic books.
KW  - local
UR  - https://muse.jhu.edu/books/9781400851188/
ER  -