00275nam a2200121Ia 45000030006000000080041000060400015000471000018000622450035000802600009001155460012001240050017001360STCL150530s9999 xx 000 0 und d aSTCLcSTCL aVarshney C.K. aWater Pollution and management c1989 aEnglish20220125170453.0