00269nam a2200121Ia 45000030006000000080041000060400015000471000018000622450032000802600006001125460012001180050017001300STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aTinbergen, N.  aSocial behaviour in animals  c0  aEnglish20220125170451.0