Columbia subject headings:
Education--Puerto Rico--History.
Educational law and legislation--Puerto Rico.
Public schools--Puerto Rico--American influences.
Teachers--Legal status, laws, etc.--Puerto Rico.
Teachers--Salaries, etc.--Puerto Rico--Case studies.
Harvard subject headings:
Education--Puerto Rico--History
Educational law and legislation--Puerto Rico.
Teachers--Legal status, laws, etc.--Puerto Rico.
Teachers--Salaries, etc.--Puerto Rico--Case studies.
Princeton subject headings:
Education--Puerto Rico--History.
Educational law and legislation--Puerto Rico.
Public schools--Puerto Rico--American influence.
Teachers--Legal status, laws, etc.--Puerto Rico.
Teachers--Salaries, etc.--Puerto Rico--History.