Barnes, Ralph M Motion and time study design and measurement of work Ralph M. Barnes - 5th ed - New York ; London ; Sydney John Wiley & Sons 1967 - 739 p fig., tab. si fotogr 24 cm Contine apendice, probl., bibliogr. si index Subjects--Topical Terms: EconomieManagementul economicMasurarea muncii Dewey Class. No.: 65.01