00271nam a2200121Ia 45000030006000000080041000060400015000471000015000622450034000772600009001115460012001200050017001320STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aWood, b.G.  aModel answers O level physics  c1979  aEnglish20220125170114.0