Columbia subject headings:
Interlingua (Latin without inflections)
Languages, Modern--Glossaries, vocabularies, etc.
Latin language--Glossaries, vocabularies, etc.
Harvard subject headings:
Interlingua (Artificial language)
Interlingua (Latin without inflections)
Languages, Modern--Glossaries, vocabularies, etc.
Latin language--Glossaries, vocabularies, etc.
Princeton subject headings: