TY  - GEN
AU  - Nambiar, K K M
TI  - Soil fertility and crop productivity under long term fertilizers use in india
U1  - 631.80954 NAM4 
CY  - Newdelhi, Publications & information division, ICAR
KW  - Soil fertility-effect of fertilizers/crop productivity-india-effect of fertilizer use/fertilizers-agriculture- india
ER  -