International Congress of Psychology (22. : 1980 : Leipzig) (1980-)(3)
Adolph Fürstner (Firma) (1868-1935)(1)
Aerde, Raymond van (1876-1944)(1)
Andersen, Hildur (1864-1956)(1)
Anheisser, Siegfried (1881-1938)(1)
Arbeitsgemeinschaft Weltanschauungsfragen (2009-)(1)