Columbia subject headings:
Grammar, Comparative and general--Subjunctive.
Grammar, Comparative and general--Subordinate constructions.
Italian language--Grammar, Comparative--Spanish.
Spanish language--Grammar, Comparative--Italian.
Harvard subject headings:
Grammar, Comparative and general--Subjunctive.
Grammar, Comparative and general--Subordinate constructions.
Italian language--Grammar, Comparative--Spanish.
Spanish language--Grammar, Comparative--Italian.
Princeton subject headings:
Grammar, Comparative and general--Subjunctive.