00300nam a2200121Ia 45000030006000000080041000060400015000471000032000622450046000942600009001405460012001490050017001610STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGunnell John; Jenkins Edgar  aStructured questions in a level chemistry  c1977  aEnglish20220125170238.0