Columbia subject headings:
Academic libraries--Interlibrary loans.
Document delivery.
Interlibrary loans.
Research libraries--Interlibrary loans.
Harvard subject headings:
Academic libraries--Interlibrary loans--Canada.
Academic libraries--Interlibrary loans--United States.
Academic libraries--Interlibrary loans.
Document delivery--Canada.
Document delivery--United States.
Document delivery.
Interlibrary loans.
Research libraries--Interlibrary loans--Canada.
Research libraries--Interlibrary loans--United States.
Research libraries--Interlibrary loans.
Princeton subject headings: