Voehl Frank Lean six sigma black belt handbook tools and methods for process acceleration - New York CRC Press 2014 - xxxiii;587p cm. ISBN: 3890.4200000000001 Standard No.: 125371 Source: 236, 02/01/2015, Vardhman Books Textual Subjects--Topical Terms: Applied Operation Research Dewey Class. No.: X:89Q8g, Q4