Columbia subject headings:
Harvard subject headings:
Polish language--Analogy.
Polish language--Grammar, Comparative--Russian.
Polish language--Grammar, Historical.
Russian language--Analogy.
Russian language--Grammar, Comparative--Polish.
Russian language--Grammar, Historical.
Princeton subject headings:
Polish language--Analogy.
Polish language--Grammar, Comparative--Russian.
Polish language--Grammar, Historical.
Russian language--Analogy.
Russian language--Grammar, Comparative--Polish.
Russian language--Grammar, Historical.