TY  - BOOK
AU  - Dillon,Lawrence S.
TI  - Animal variety: an evolutionary account
SN  - 0697045234
PY  - 1976///
CY  - Dubuque, Iowa
PB  - W. C. Brown Co.
KW  - Variation (Biology)
KW  - Evolution
N1  - Includes bibliographies and index
ER  -