Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--Germany--North Rhine-Westphalia.
North Rhine-Westphalia (Germany)--Antiquities.
Paleobotany--Germany--North Rhine-Westphalia.
Plant remains (Archaeology)--Germany--North Rhine-Westphalia.
Synanthropic plants--Germany--North Rhine-Westphalia.
Princeton subject headings:
Catalogs.
Excavations (Archaeology)--Germany--Rhine Province.
Paleobotany--Germany--Rhine Province.
Plant remains (Archaeology)--Germany--Rhine Province--Catalogs.
Rhine Province (Germany)--Antiquities.
Synanthropic plants--Germany--Rhine Province--History.