info:oai:icrisat:6507info:ofi/fmt:xml:xsd:bookSahrawatK LSahrawat, K LWaniS PWani, S PChanderGChander, GPardhasaradhiGPardhasaradhi, GAhmedM IAhmed, M I2011Widespread Zinc and Other Deficiencies in the Rainfed Semi Arid Tropics of India: Soil Maps as Tools to Delineate and Manage Deficient Regionsproceeding