TY  - BOOK
AU  - Williams,Watkin
TI  - Genetical principles and plant breeding
U1  - 581.15 
PY  - 1964///
CY  - Oxford
PB  - Blackwell Scientific Publications
KW  - Crops
KW  - Genetics
KW  - Plant breeding
N1  - Includes index; Bibliography: p. 458-487
ER  -