TY  - BOOK
AU  - Indian Society of Soil Science
TI  - Nitrogen in soils, crops and fertilizers
U1  - 631.4+631.8+633:546.17 M4 
PY  - 1984///
CY  - New Delhi
PB  - Indian Society of Soil Science
KW  - Nitrogen,soil,Fertilizers
ER  -