Columbia subject headings:
College teachers--Pensions--Puerto Rico.
College teachers--Pensions--United States.
Teachers--Pensions--Puerto Rico.
Teachers--Pensions--United States.
Harvard subject headings:
College teachers--Pensions--Puerto Rico.
College teachers--Pensions--United States.
Teachers--Pensions--Puerto Rico.
Teachers--Pensions--United States
Princeton subject headings:
College teachers--Pensions--Puerto Rico.
College teachers--Pensions--United States.
Teachers--Pensions--Puerto Rico.
Teachers--Pensions--United States.