TY  - BOOK
AU  - Roubik,David W.
TI  - Ecology and natural history of tropical bees / 
SN  - 0521429099
U1  - 595.799 
PY  - 1989///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - BEES
N1  - Includes index and bibliographical reference
ER  -