Columbia subject headings:
French language--Conditionals.
French language--Verb.
Spanish language--Conditionals.
Spanish language--Verb.
Harvard subject headings:
French language--Conditionals.
French language--Grammar, Comparative--Spanish.
Spanish language--Conditionals.
Spanish language--Grammar, Comparative--French.
Princeton subject headings:
French language--Conditionals.
French language--Grammar, Comparative--Spanish.
Spanish language--Conditionals.
Spanish language--Grammar, Comparative--French.