Columbia subject headings:
Harvard subject headings:
Grammar, Comparative and general--Morphology--Study and teaching.
Grammar, Comparative and general--Phonology--Study and teaching.
Grammar, Comparative and general--Semantics--Study and teaching.
Grammar, Comparative and general--Syntax--Study and teaching.
Linguistics--Study and teaching--Exercises.
Semantics, Comparative--Study and teaching.
Princeton subject headings:
Linguistics--Problems, exercises, etc.