@book{62918,
	author = {Steel, Robert George Douglas. and Torrie, James Hiram.},
	title = {Bioestadística},
	publisher = {McGraw-Hill,},
	year = {1985},
	address = {México, D.F. :},
	note = {Trad. de: Principles and procedures of statistics a biometrical approach, 2 ed. de 1980}
}