00279nam a2200121Ia 45000030006000000080041000060400015000471000021000622450036000832600009001195460012001280050017001400STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGallatly William  aModern geometry of the triangle  c1930  aEnglish20220125170012.0