TY - BOOK AU - P NARAYANA PISHARODY AU - A P A BRITO MUTUNAYAGAM TI - FORMS AND DISTRIBUTION OF IRON AND MANGANESE IN RICE SOILS OF KERALA U1 - E N65 NA 6 PY - 1965/// CY - AGRICULTURAL COLLEGE AND RESEARCH INSTITUTE VELLAYANI PB - DIVISION OF AGRICULTURAL CHEMISTRY ER -