TY  - BOOK
TI  - Soil fertility and fertiliser use: v.4 nutrient management and supply system for sustaining agriculture in 1990s
U1  - 631.8  
PY  - 1990///
CY  - New Delhi
PB  - IFFCO
KW  - Present agriculture production performance and future challenges
KW  - Fertilisetr and sustainable agriculture
KW  - Extension education in fertiliser management
ER  -