TY  - BOOK
AU  - Lawrence, W J C.
AU  - Hall, Daniel.
TI  - Practical plant breeding
U1  - 631.53 
PY  - 1948///
CY  - London
PB  - George Allen and Unwin
KW  - Agricultural genetics
KW  - Hybridization -- Plants
KW  - Plant genetics
N1  - Includes index
ER  -