TY - BOOK AU - AU - Bajwa,M.S. ED - Punjab Agricultural University. ED - Indian Council of Agricultural Research. ED - Indian Society of Soil Science. ED - Potash & Phosphate Institute of Canada. ED - Food and Agriculture Organization of the United Nations. TI - Proceedings of the international symposium on Nutrient management for sustained productivity PY - 1992/// CY - Ludhiana, India PB - Department of Soils, Punjab Agricultural University KW - Soil fertility KW - Crops KW - Nutrition N1 - "Proceedings of the International Symposium on 'Nutrient Management for Sustained Productivity'"--Foreword ER -