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Geographia Helvetica, 1946, I (2 ): 165-77
Weimar: Gustav Kiepenheuer Verlag, 1978, 221-26,
Heidelberg Jhg. 15, Bd. 34: Rupertocarola Mitteilungen der Vereinigung der Freunde der Studentschaft der Universittat Heidelberg, Dec 1963 : 171 - 173 p.