00372nam a2200145 a 450000500170000002000150001708200170003210000200004924500570006925000120012626000310013830000250016963000170019463000150021120251202164208.0  a0471083356  a658.542bBAR  aBarnes, Ralph M  aMotion and time study design and measurement of work  a7th ed.  aNew YorkbJohn Wileyc1980  axi, 689p, 22cm.bH B  aMotion study  aTime study