TY  - BOOK
AU  - GURBAKSH Singh
TI  - Fertilizer requirements of wheat sown in potato-wheat rotation
U1  - T 633.11 G96F 
PY  - 1974///
CY  - Ludhiana
PB  - PAU
KW  - WHEAT -- FERTILIZERS AND MANURES
KW  - ROTATION OF CROPS
ER  -