Columbia subject headings:
Harvard subject headings:
Grammar, Comparative and general--Adverbials.
Grammar, Comparative and general--Subordinate constructions.
Language acquisition.
Psycholinguistics.
Princeton subject headings:
English language--Adverbials.
English language--Grammar, Comparative--German.
German language--Adverbials.
German language--Grammar, Comparative--English.
Psycholinguistics.