TY  - BOOK
AU  - Hurd, R. G. 
AU  - Biscoe, P. V. 
AU  - Dennis, C. 
TI  - Opportunities for increasing crop yields 
SN  - 027308481x
U1  - 631 HUR  
PY  - 1980///.
CY  - Boston : 
PB  - Pitman Advanced Publishing Program, 
KW  - Crop yields
KW  - Plants, Protection of
KW  - Crops--Physiology
KW  - Agriculture
KW  - Plant physiology
N1  - Includes index.
ER  -