Gupta, I C Twentieth century soil salinity research in India. : An Annotated Bibliography 1901 - 1983 / by I C Gupta, K N Pahwa & J S P Yadav . - 1st Ed. - New Delhi: Concept Publishing Company, 1983. - 792p.: 15cm. Subjects--Index Terms: Geography & travel. Geography Dewey Class. No.: 910