Columbia subject headings:
Germany--Description and travel--Textbooks.
Germany--Relations--Poland.
Poland--Description and travel--Textbooks.
Poland--Relations--Germany.
Harvard subject headings:
Germany (West)--Geography--Textbooks.
Germany (West)--Relations--Poland.
Germany--Geography.
Germany--Guidebooks.
Germany--Relations--Poland.
Poland--Geography--Textbooks.
Poland--Geography.
Poland--Guidebooks
Poland--Relations--Germany
Poland--Relations--Germany (West)
Princeton subject headings: