TY  - BOOK
AU  - Das, Dipty Kumar
TI  - Transformation of Applied Zinc from Different Sources in Relation to Its Availability to Maize in Calcareous Soil
U1  - 631.41 
PY  - 1988///
CY  - Pusa, Samastipur
PB  - RAU
KW  - Soil Science
KW  - Thesis
ER  -