000 00298nam a2200097 4500
245 _aMaintenance of mining machinery : proceedings
100 _aNational Productivity Council
260 _aNew Delhi
_bNational Productivity Council
_cc1980
300 _aviii, 446p.: ill.; 24cm.
082 _a620.0046
_bNAT
999 _c43941
_d43941