000 00297 a2200121 4500
082 _a372.353
_bMAS
100 _aEarl, Anthony
_955385
245 _aSimple machines
_bmatter in motion
_c Anthony Earl,
260 _aChicago:
_bAIMC
_c1963
300 _a80p.
650 _aMachines
_955386
942 _cBK
999 _c56446
_d56446