TY  - BOOK
AU  - Padmaja P
AU  - Menon P K G,
AU  - Rao G S L V ,
TI  - Sustaining rice productivity throughn integrated nutrient management
U1  - 633 .18 
PY  - 1993///
CY  - Thrissur
PB  - Kerala Agricultural University
KW  - manures
KW  - Soil studies
ER  -