TY  - BOOK
AU  - Hay , Robert K. M.  
AU  - Porter , John R.
TI  - Physiology of crop yield
SN  - 9781405108591
U1  - 633 
PY  - 2006///
CY  - UK
PB  - Wiley-Blackwell
KW  - CROPS
KW  - CROP YIELD
ER  -