TY  - BOOK
AU  - BACHITTER, Singh
TI  - Fertilizer phosphorus management in a long-term groundnut-based cropping system
U1  - 631.452 B12F 
PY  - 2002///
PB  - Ludhiana
KW  - CROPPING SYSTEMS
KW  - SOILS -- PHOSPHORUS CONTENTS
ER  -