TY  - BOOK
AU  - Engels, W,
TI  - Social Insects : An Evolutionary Approach to Castes and Reproduction
SN  - 3540208120
U1  - 595 
PY  - 1990///
CY  - New York
PB  - Springer - Verlag
KW  - Arthropods
KW  - Social Insects
ER  -