Columbia subject headings:
English language--Dictionaries--German.
German language--Dictionaries--English.
Science--Dictionaries--German.
Science--Dictionaries.
Harvard subject headings:
English language--Dictionaries--German
German language--Dictionaries--English.
Science--Dictionaries
Science--Dictionaries--German
Princeton subject headings:
Dictionaries.
English language--Dictionaries--German.
German language--Dictionaries--English.
Science--Dictionaries--German.
Science--Dictionaries.