00378nam a2200109Ia 4500082001800000245003900018100004900057942000700106008004100113999001900154952009500173  aST 500.2 PHYS 0aPhysical sciences. Study guide 12   a KELDER, Karin H.   Cape Town, 2008  925890  cBK210817s9999    xx            000 0 und d  c100353d100350  00104070aGROOLbGROOLd2021-08-17g280.00l0p3322810069629r2021-08-17w2021-08-17yBK