TY  - BOOK
AU  - VERMA, Hari Singh
TI  - Response surface studies on nitrogen, phosphorus and potassium in perlette cv. of grape
U1  - T 634.8 V50R 
PY  - 1975///
CY  - Ludhiana
PB  - PAU
KW  - GRAPES -- FERTILIZERS AND MANURES
ER  -