GH
Geographica Helvetica
GH
Geogr. Helv.
2194-8798
Geographisch-Ethnographische Gesellschaft Zürich
Göttingen, Germany
10.5194/gh-20-192-1965
Porto
Nigg
W.
31
12
1965
20
4
192
197
Copyright: © 1965 W. Nigg
1965
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