TY  - BOOK
AU  - Ehrlich, P. R. and others,
TI  - Process of Evolution
SN  - 0070191336
U1  - 575 
PY  - 1974///
CY  - New Delhi
PB  - Tata McGraw Hill Pub.
KW  - Evolution
KW  - Specific parts of & systems in plants
ER  -