Columbia subject headings:
Czech language--Grammar, Comparative--German.
Czech language--Grammar, Comparative--Polish.
Czech language--Passive voice.
German language--Grammar, Comparative--Czech.
German language--Grammar, Comparative--Polish.
German language--Passive voice.
Polish language--Grammar, Comparative--Czech.
Polish language--Grammar, Comparative--German.
Polish language--Passive voice.
Harvard subject headings:
Princeton subject headings:
Czech language--Passive voice.
German language--Grammar, Comparative--Czech.
German language--Grammar, Comparative--Polish.
German language--Passive voice.
Grammar, Comparative and general--Passive voice.
Polish language--Passive voice.