00297nam a2200121Ia 45000030006000000080041000060400015000471000019000622450056000812600009001375460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRao,C.N.R.; Ed  aIndian Journal of chemical education Vol-6 December  c1979  aEnglish20220125165841.0