000 00328nam a2200145Ia 4500
100 _aKrishna.N.V
490 _vMG1
942 _cBK
654 _aPreventive Maintainance
245 _aPreventive Maintainance
260 _bNational Productivity council
_aNew Delhi
_c1977
300 _a46
546 _aENGLISH
999 _c26995
_d26995