TY  - BOOK
AU  - "Tondon, H.L.S., comp."
TI  - "Nitrogen in Indian Agriculture (1961-70) - A bibliography of N,NP,NK,NPK, & other related factors"
U1  - 016:631.84   L2 
PY  - 0000///New Delhi
CY  - 1972
PB  - European Nitrogen Service Programme
ER  -