TY  - BOOK
AU  - Tandon, H. L. S. Comp.
TI  - Nitrogen in Indian agriculture (1961-70) A bibliography of N, NP, NK, NPK and other related factors
U1  - 16.63184/TAN 
PY  - 1972///
CY  - New Delhi
PB  - European Nitrogen Service Programme
KW  - Agiculture
KW  - plant-effect of nitrogen on
ER  -