Salin, Edgar (1892-1974)(2)
Collie, Angus C.(1)
Reekie, T.(1)
Zimmermann, Harry W. (1903-1984)(1)
Chamber of Mines of South Africa(2)
Basel UB(2)
Adressat(2)
Bestandshaltende Einrichtung(2)
Briefsammlung(2)
Basel(2)
Johannesburg(2)
