TY  - BOOK
AU  - Sharma, R.C.
AU  - Grewal, J.S.
AU  - Upadhayay, N. C.
TI  - Nitrogen management in potato
T2  - (Tecnical bulletin; no. 32)
PY  - 0000///
CY  - Shimla
PB  - Central Potato Research Institute
ER  -