Author: Nikolov, I., 1960.:
Title: Die pliozäne Säugetierfauna aus dem Lignitkohlenbecken von Hrabarsko.
Description: Trav. Géol. Bulgarie, Sér. Paléont., 2: pp. 295-331, 9 pls. of photos (mostly of mastodont molars), 2 figs., refs. Plain new wrs. - In Bulgarian (Cyrillic type) with German summary.

Keywords: