TY  - BOOK
AU  -  N.Rama Rao and G.S.Sekhon
TI  - Critical potassium levels in selected crops
T2  - PRII Special Publication, 2
U1  - 631.83:633/634  M9 
PY  - 1989///
CY  - Gurgaon
PB  - Potash Research Institute, India
KW  - Rama Rao, N.
KW  - Fertilizers,Potassium
ER  -