Columbia subject headings:
Harvard subject headings:
Cartography--Congresses
Comparative civilization--Congresses
Geography, Ancient--Congresses.
Germany (East)--Armed Forces.
Germany (East). Nationale Volksarmee--Facilities.
Germany (East). Nationale Volksarmee--History.
Health facilities--Germany (East)
Historical geography--Congresses.
Recreation centers--Germany (East)
Soldiers--Recreation--Germany (East)
Vacation homes--Germany (East)
Princeton subject headings:
Comparative civilization--Congresses.
Geography, Ancient--Congresses.