TY  - BOOK
AU  - A. Swarup
AU  -  D. Damodar Reddy  R.N. Prasad
TI  - Long-term soil fertility management through integrated plant nutrient supply
U1  - 631.42 
PY  - 1998///
CY  - Bhopal
PB  - Indian Institute of soil sciemce
ER  -