TY  - BOOK
AU  - Kuldip Singh
TI  - Effect of different ratios of nitrogen to phosphorous in fertilizer mixture on the yield of wheat and maize crops grown in different types of East Punjab soils
U1  - T 633.11 K98E 
PY  - 1951///
CY  - Ludhiana
PB  - PAU
KW  - SOILS -- PHOPHOROUS CONTENT
KW  - SOILS -- NITROGEN CONTENT
ER  -