Columbia subject headings:
Canada--Bibliography.
Libraries--Canada--Book lists.
Reference books--Bibliography.
Reference books--Canada--Bibliography.
Harvard subject headings:
Canada--Bibliography.
Canada--Reference books--Bibliography.
Libraries--Canada--Book lists.
Reference books, Canadian--Bibliography.
Reference books--Bibliography
Reference books--Canada--Bibliography.
Princeton subject headings:
Canada--Bibliography.
Libraries--Canada--Book lists.
Reference books--Bibliography.
Reference books--Canada--Bibliography.