I. GENERAL WORKS. PHYSICAL GEOGRAPHY
Atlas Climatologique de l’empire de la Russie. Petersburg 1900 (Russian).
Atlas geologiczny Galicyi. Cracow 1882 ff. (Polish).
Beauplan. Description de l’Ukraine. Rouen 1660.
Bonmariage. La Russie d’Europe. Brussels 1903.
Brockhaus-Efron. Enciklopedícheski Slavar. Petersburg, 1st ed. beginning 1890. 2nd ed. in course of publication.
Carte géologique internationale de l’Europe. Berlin. D IV, D V, E IV, E V, F IV, F V.
Dokutchaev. The Russian Steppes. Petersburg 1893.
Encyklopedia Polska. Vol. I, Cracow 1912. (Polish).