Columbia subject headings:
Information storage and retrieval systems--Law--Mexico.
Law--Mexico--Bibliography.
Law--Mexico--Indexes.
Legal research--Mexico--Computer network resources.
Legal research--Mexico.
Harvard subject headings:
Law--Mexico--Bibliography.
Law--Mexico--Indexes.
Legal research--Mexico.
Princeton subject headings:
Indexes.
Law--Mexico--Bibliography.
Law--Mexico--Indexes.
Legal research--Mexico.