Columbia subject headings:
Harvard subject headings:
Contrastive linguistics.
German language--Grammar, Comparative--Spanish.
German language--Phonology, Comparative--Spanish.
Spanish language--Grammar, Comparative--German.
Spanish language--Phonology, Comparative--German.
Princeton subject headings:
Contrastive linguistics.
German language--Grammar, Comparative--Spanish.
German language--Phonology, Comparative--Spanish.
Spanish language--Grammar, Comparative--German.
Spanish language--Phonology, Comparative--German.