Hart, Marilyn K . Qualitative methods for quality and productivity improvement / Marilyn K Hart and Robert F Hart . - Milwaukee, Wis. : ASQC Quality Press, 1989. - xi, 363 pages : illustrations ; 24 cm. Includes Bibliography and Index ISBN: 0873890566 Subjects--Topical Terms: Total quality management. Dewey Class. No.: 658.5620151 / HAQ 1989