TY  - BOOK
AU  - Christiansen,Freddy B.
AU  - Fenchel,Tom M.
TI  - Measuring selection in natural populations
SN  - 0387084355 :
U1  - 574.0182 
PY  - 1977///
CY  - Berlin
PB  - Springer-Verlag
KW  - Frydenberg, Ove,
KW  - Natural selection
KW  - Measurements
KW  - Population genetics
KW  - Mathematical models
KW  - Evolution (Biology)
ER  -