000			00317nam a2200121 a 4500
001			4140
005			20140414131957.0
008			090218s19uu xx 00 eng d
050			_aTR 621.8 _bM55 2003
100			_aMerrell, Jo Ann
245			_aSimple machines : _bhands-on minds-on science (primary).
999			_c112971 _d112971