TY  - BOOK
AU  - Simmonds, N W
TI  - Principles of Crop Improvement
U1  - 630 
PY  - 1979///
CY  - Logman
PB  - English Language Book Society
KW  - GENERAL STACK
KW  - TECHNOLOGY
KW  - AGRICULTURE & RELATED TECHONOLOGIESGeneralia
ER  -