by Müntzing, Arne.
by Luig, Norbert H.
by Herzog, Helmut | Gerhard Geisler [editor].
by Braun, H | Riehm, E.
by Hoffman, Walther | Plarre, Werner | Mudra, Alois.
by Hoffman, Walther; Mudra, Alois; Plarre, Werner [editor].
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