Columbia subject headings:
English language--Grammar, Comparative--Polish.
English language--Verb.
Polish language--Grammar, Comparative--English.
Polish language--Verb.
Harvard subject headings:
English language--Grammar, Comparative--Polish
English language--Verb
Polish language--Grammar, Comparative--English.
Polish language--Verb.
Princeton subject headings:
English language--Grammar, Comparative--Polish.
English language--Verb.
Polish language--Grammar, Comparative--English.
Polish language--Verb.