Columbia subject headings:
Contrastive linguistics.
English language--Grammar, Comparative--Spanish.
English language--Infinitive.
English language--Prepositional phrases.
Spanish language--Grammar, Comparative--English.
Spanish language--Infinitive.
Spanish language--Prepositional phrases.
Harvard subject headings:
Contrastive linguistics.
English language--Grammar, Comparative--Spanish
English language--Infinitive
English language--Prepositional phrases
Spanish language--Grammar, Comparative--English.
Spanish language--Infinitive.
Spanish language--Prepositional phrases.
Princeton subject headings: