TY  - BOOK
AU  - Evans, L T
TI  - Crop evolution, adaptation and yield
SN  - 9780521295581
U1  - 633 
PY  - 1993///
CY  - New York
PB  - Cambridge university press
KW  - crop yield and world food supply
KW  - the future of yield
KW  - adaptation and the ecology of yield
KW  - increases in yield
KW  - efficient use of resources
ER  -