@book{344787,
	author = {Cochran, William G.},
	title = {Sampling techniques /},
	publisher = {Wiley,},
	year = {1960.},
	address = {[S.l.] :},
	edition = {1st ed.},
	note = {Paperback.},
	url = {http://www.amazon.com/exec/obidos/ASIN/9971512718/chopaconline-20}
}