Columbia subject headings:
Centro Histórico (Morelia, Michoacán de Ocampo, Mexico)--Remodeling--Congresses.
Dwellings--Conservation and restoration--Mexico--Congresses.
Historic districts--Conservation and restoration--Mexico--Congresses.
Mexico--Buildings, structures, etc.--Congresses.
Harvard subject headings:
Princeton subject headings:
Centro Histórico (Morelia, Michoacán de Ocampo, Mexico)--Remodeling--Congresses.
Dwellings--Conservation and restoration--Mexico--Congresses.
Historic districts--Conservation and restoration--Mexico--Congresses.
Mexico--Buildings, structures, etc.--Congresses.