Expedition name:
Expedition participant(s):
Petrak, Franz
Petrak, F.; Petrak, Franz
1886
1973
1908
1943
Austria - 1939-43; Costa Rica - 1913-25; Czech Republic - 1908-40; Germany - 1908-42; Philippines - 1925; Poland - 1918; Slovakia - 1912-24; Spain - 1926; Venezuela - 1928
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