@book{2357,
	author = {Sukhatme, Pandurang Vasudeo, and Sukhatme, Balkrishna V.,},
	title = {Sampling theory of surveys :},
	publisher = {Iowa State University Press, },
	year = {c 1970.},
	address = {Ames :},
	edition = {2nd rev. ed.},
	note = {Includes Index.}
}