00273nam a2200121Ia 45000030006000000080041000060400015000471000029000622450012000912600019001035460012001220050017001340STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aWatt, K.E.F.Khanna, S.K.  aEcology  bMcgraw hillc0  aEnglish20220125170349.0