00379nam a2200109Ia 4500082001800000245003900018100004900057942000700106008004100113999001900154952009600173  aST 500.2 PHYS 0aPhysical sciences. Study guide 12   a KELDER, Karin H.   Cape Town, 2008  925890  cBK210817s9999    xx            000 0 und d  c242702d242699  00104070aEVANLbEVANLd2021-08-18g128.00l0p33228022482457r2021-08-18w2021-08-18yBK