000 00257nam a2200109Ia 4500
008 160710s1939 xx 000 0 und d
100 _aHUMPHERY .W & BERGOTT E.A
245 _aELEMENTARY MECHANICS
260 _bGREEEN
_c1939
300 _a628
942 _2ddc
_cB
999 _c4023
_d4023