Bancroft, Huldah. Bancroft's introduction to biostatistics / [by] Johannes Ipsen [and] Polly Feigl. - 2d ed. - x, 223 p. ; 24 cm. LCCN: 74106338 Subjects--Topical Terms: Mathematical statistics.Biomathematics. LC Class. No.: QA276 / .B25 1970 Dewey Class. No.: 574/.01/82