TY  - BOOK
AU  - Simmonds,  N W
AU  - Smart, J
TI  - Principles of crop improvement
U1  - 575:631.52 
PY  - 1999///
CY  - Oxford
PB  - Blackwell Science
KW  - Breeding techniques
KW  - Genetic conservation
KW  - Genogype-environment interactions
ER  -