Republica Socialistă România, harta geologică /
Institutul de Geologie și Geofizică.
[Bucharest?] : Institutul de Geologie și Geofizică,
[1978]
Title on verso: Harta geologică = Carte géologique = Geological map = [Geologicheskai︠a︡ karta].
Text, stratigraphic table, and blank areas on verso.
Geology