TY  - BOOK
AU  - Mettler, Lawrence E.
AU  - Gregg, Thomas G. 
TI  - Population gentics and evolution
U1  - 576 MET G 
PY  - 1969///
CY  - New Jersey
PB  - Prentice-Hall, Inc
KW  - Natural population
KW  - Genetic Variation
ER  -