00360nam 2228201 450000100060000000300230000600500090002900800410003808200080007907200150008702000180010210000170012026000280013725000060016524500330017128201StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a720 aTragsystem a3-421-02134-1 aRalph Rapson bDeutsche Verlags c1974 a2 atragsystem structure systems