Methods analysis and work measurement / Edward J. Polk ; with contributions by John J. Mariotti ... [et al.]. Polk, Edward J. Mariotti, John J. Work measurement. T60 .P64 1984 658.542 POM Includes index. Bibliography: p. 279-280. New York : McGraw-Hill, c1984. c1984. 1984 Text viii, 294 p. : eng McGraw-Hill series in industrial engineering and management science