Columbia subject headings:
Flysch--Bulgaria--Balkan Mountains--Maps.
Flysch--Carpathian Mountains--Maps.
Geology, Stratigraphic--Cretaceous--Maps.
Geology, Stratigraphic--Paleogene--Maps.
Maps.
Sediment transport--Bulgaria--Balkan Mountains--Maps.
Sediment transport--Carpathian Mountains--Maps.
Harvard subject headings:
Flysch--Bulgaria--Balkan Mountains--Maps.
Flysch--Carpathian Mountains--Maps.
Geology, Stratigraphic--Cretaceous--Maps.
Geology, Stratigraphic--Tertiary--Maps.
Sediment transport--Bulgaria--Balkan Mountains--Maps.
Sediment transport--Carpathian Mountains--Maps.
Princeton subject headings: