Wadsworth, Harrison M. Modern methods for quality control and improvement / Harrison M. Wadsworth, Jr., Kenneth S. Stephens, A. Blanton Godfrey. - New York : Wiley, c1986. - xiii, 690 p. : ill. ; 25 cm. Includes bibliographies and index. ISBN: 047187695X : LCCN: 85020285 Subjects--Topical Terms: Quality control.Quality control--Statistical methods. LC Class. No.: TS156 / .W25 1986 Dewey Class. No.: 658.562 / WAM 1986