000 00436nam a2200133Ia 4500
008 211018s9999||||xx |||||||||||||| ||und||
082 _a621.9
_bMA-I
100 _aMann Guravtar Singh
_924298
245 0 _aImprove the machinability of 20mncr5 steel and tool life of drill bit through an
_cMann Guravtar Singh
250 _aDr B R
260 _aJalandhar
_bDr B R Ambedkar National institute o
_c2014
300 _a87
942 _cTH
999 _c196707
_d196707