00284    a2200109   4500082001600000100001500016245004300031260003800074300002000112650003000132700001200162  a620.82bDAL  aDalela, S.  aText book of work study and ergonomics  aDelhibNem chand jainc1971g1971  ax, 492p.c24cm.  aHuman factors engineering  aSaurabh