TY  - BOOK
AU  - Laurence H. Snyder
AU  -  Paul R. David, 
TI  - Principles of heredity. Ed 5
U1  - 575.1 
PY  - 1957///
CY  - Boston
PB  - D .C.Heath and Co
N1  - Laurence H. Snyder & Paul R. David: Principles of heredity. Ed 5.  (5th)  Boston.  D .C.Heath and Co, 1957.--(575.1SNY)
ER  -