000 00361 a2200145 4500
082 _a620.82
_bDAL
090 _c16406
_d24842
100 _aDalela, S.
245 _aText book of work study and ergonomics
260 _aDelhi
_bNem chand jain
_c1971
_g1971
300 _ax, 492p.
_c24cm.
650 _aHuman factors engineering
700 _aSaurabh
942 _cSR
999 _c44403
_d44403