Columbia subject headings:
English language--Dictionaries--German.
French language--Dictionaries--German.
German language--Dictionaries--French.
Military architecture--Europe--Dictionaries--French.
Military architecture--Europe--Dictionaries--German.
Military architecture--Europe--Dictionaries.
Harvard subject headings:
English language--Dictionaries--German
Fortification--Dictionaries--French.
Fortification--Dictionaries--German.
French language--Dictionaries--German.
German language--Dictionaries--French.
Military architecture--Europe--Dictionaries--French.
Military architecture--Europe--Dictionaries--German.
Military architecture--Europe--Dictionaries.
Princeton subject headings:
Castles--Dictionaries--Polyglot.
Fortification--Dictionaries--Polyglot.