@book{97107,
	author = {International congress on soil science, 12th New Delhi, Indi, Feb.8-16, 1982.},
	title = {Vertisols and rice soils of the tropics; symposia papers.},
	publisher = {IARI},
	year = {1982},
	series = {Symposia Papers 11},
	address = {New Delhi}
}