TY  - BOOK
AU  - Volpe,E.Peter
TI  - Understanding evolution
SN  - 0697045463
AV  - QH366.2 .V64 1977 
PY  - 1977///
CY  - Dubuque, Iowa
PB  - W. C. Brown
KW  - Evolution
N1  - Includes bibliographies and index
ER  -