00274nam a2200097 a 450000500170000008200170001710000350003424500440006926000440011330000190015720251203091653.0  a613,bD, bij  aBijlani, R.L., Manchanda, S.K.  aHuman machine: how to prvent breakdowns  aDelhibNational book trust, Indiac1990  axii,235p, 22cm