TY  - GEN
AU  - Nambiar, K K M
TI  - Soil fertility and crop productivity under long-term fertilizer use in India
U1  - 631.  80954 NAM 
CY  - Newdelhi, Publications & information division, ICAR
KW  - Soil fertility-effect of fertilizers/crop productivity-INdia-effect of fertilizers use/fertilizers-agriculture - India
ER  -