Feliński, Roman (1886-1953)

Lauschke, Georg (1884- )

Schliepmann, Hans (1855-1929). Editor

Schaller, Waldemar Theodore (1882-1967) United States of America. Geological Survey.

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Clarke, Frank Wigglesworth (1847-1931) United States of America. Geological Survey.

Spencer, Arthur Coe (1871-1964) United States of America. Geological Survey.

Lupton, Charles Thomas (1878-1935) United States of America. Geological Survey.

Winchester, Dean Eddy (1883-1936) Hares, Charles Joseph (1881-?) Lloyd Russell E. Parks, E. M. United States of America. Geological Survey.

Capps, Stephen R. (1881-1949) United States of America. Geological Survey.

Shaw, Eugene Wesley (1881-1935) Matson, George Charlton (1873-?) Wegemann, Carroll Harvey (1879-?) United States of America. Geological Survey.

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Eakin, Henry Miner (1883-1936) United States of America. Geological Survey.

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Deutsche Landwirtschafts-Gesellschaft

László, Gábor Emszt, Koloman Magyar Királyi Földtani Intézet (Budapest)

Sigmond, Alexius A. J. von (1873-1939) Magyar Királyi Földtani Intézet (Budapest)

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Marshall, Robert Bradford (1867-1949) United States of America. Geological Survey.

Butler, Bert Sylvenus (1877-1960) Heikes, Victor Conrad(1867-1948) United States of America. Geological Survey.

Jones, Edward L. United States of America. Geological Survey.

Hewett, Donnell Foster (1881-?) United States of America. Geological Survey.

Calkins, Frank Cathcart United States of America. Geological Survey.