Autor
Bassler, Ray S. 1878-1961
2
Berry, Edward Wilber, 1875-1945
2
Canu, Ferdinand, 1863-1932
2
Akademija nauk Ukrajins'koji RSR. Institut heolohiji korysnych kopalyn
1
Heißig, Kurt, 1941-
1
Klika, Bohumil, 1868-1942
1
Kräusel, Richard, 1890-1966
1
Laube, Gustav Carl, 1839-1923
1
Scudder, Samuel H.
1
Venglinskij, Ivan Vladimirovič
1
Weyland, Hermann, 1888-1974
1