Sulphur in Indian agriculture proceedings

Sulphur in Indian agriculture proceedings text xx New Delhi FAI 1988 9999 monographic und "xi,285p." "TSI-FAI Symposium, New Delhi, Mar.9-11, 1988." "Sulphur,Fertilizers" "631.811.7(540) ""1988.3.9/11"" (082.2) M8" 130903