000 00280nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a621
100 _aC.W Han & Others
245 0 _aMachanics of machinery
260 _bMc. Graw Hill, New York
300 _a509
942 _2ddc
999 _c72723
_d72723