TY  - BOOK
AU  - Carlson, Peter S [e.d.]
TI  - The Biology of Crop Productivity
SN  - 0121598500
U1  - 570 
PY  - 1980///
CY  - London
PB  - Academic Press
KW  - Crop yields
KW  - Crop Physiology
UR  - http://14.139.59.218:80/cgi-bin/koha/opac-detail.pl?biblionumber=2481
ER  -