00298nam a2200133Ia 45000030006000000080041000060400015000471000016000622450031000782500010001092600016001195460012001350050017001470STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKumar, H.D.  aModern concepts of ecology  aFifth  bVikasc1983  aEnglish20220125170455.0