Columbia subject headings:
Czech language--Aspect.
Czech language--Grammar, Comparative--Russian.
Russian language--Aspect.
Russian language--Grammar, Comparative--Czech.
Harvard subject headings:
Czech language--Aspect.
Czech language--Grammar, Comparative--Russian.
Russian language--Aspect.
Russian language--Grammar, Comparative--Czech.
Princeton subject headings:
Czech language--Grammar, Comparative--Russian.
Czech language--Verb.
Russian language--Grammar, Comparative--Czech.
Russian language--Verb.
Speech acts (Linguistics)