@book{133210,
	author = {Pagano, Marcello, and Gauvreau, Kimberlee,},
	title = {Principles of biostatistics /},
	publisher = {Duxbury Press,},
	year = {c1993.},
	address = {Belmont, Calif. :},
	note = {System requirements for computer disk: IBM PC; DOS; Stata statistical package. Data sets on disk in both ASCII and Stata files.}
}