@book{5586,
	author = {Snedecor, George Waddel, and Cochran, William Gemmell,},
	title = {Statistical methods. /},
	publisher = {Blackwell Publishing,},
	year = {1989.},
	address = {Iowa :},
	edition = {8th ed.},
	note = {Includes bibliographical references, index and appendix.}
}