TY  - BOOK
AU  - Hay, Robert K. M.
AU  - Porter, John
TI  -  The physiology of crop yield
SN  - 9781405108591
U1  - 633  22
PY  - 2006///
CY  - Oxford
PB  - Blackwell
KW  - Crops
KW  -  Physiology
KW  - Crop yields
N1  - Includes bibliographical references (p. 277- 307) and index
ER  -