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Kanawaty G, . (1992). Introduction to work study. I.L.O: I.L.O., Generio.
Kanawaty G, . 1992. Introduction to work study. I.L.O: I.L.O., Generio.
Kanawaty G, . Introduction to work study. I.L.O: I.L.O., Generio. 1992.
