00291nam a2200121Ia 45000030006000000080041000060400015000471000018000622450026000802600034001065460012001400050017001520STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aJohn Todd, A.  aMechanism of exchange  bOxford University pressc1921  aEnglish20220125165549.0