LIBRARY History of the Expedition in Asia, 1927-1935, Part III (1933-1935) 1944 · ENGLISH · PDF View details →
LIBRARY History of the Expedition in Asia, 1927-1935, Part II (1928-1933) 1943 · ENGLISH · PDF View details →
LIBRARY History of the Expedition in Asia, 1927-1935, Part I (1927-1928) 1943 · ENGLISH · PDF View details →
LIBRARY Die Geographisch-wissenschaftlichen Ergebnisse meiner Reisen in Zentralasien 1894-1897. 1900 · GERMAN · PDF View details →
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