ANNAMMA GEORGE 1989
PHOSPHORUS MANAGEMENT IN A RICE BASED CROPPING SYSTEM - COLLEGE OF AGRICULTURE VELLAYANI DEPARTMENT OF AGRONOMY 1989
J N89 / AN 60
PHOSPHORUS MANAGEMENT IN A RICE BASED CROPPING SYSTEM - COLLEGE OF AGRICULTURE VELLAYANI DEPARTMENT OF AGRONOMY 1989
J N89 / AN 60