00341nam a2200133Ia 45000030006000000080041000060400015000471000035000622450059000972500013001562600009001695460012001780050017001900STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRitcha Saxena; Saxena,V.P.; Ed  aObjective type and short answer questions in chemistry  aTwelveth  c1994  aEnglish20220125165822.0