Columbia subject headings:
Drainage--Mexico--Mexico, Valley of--History.
Harvard subject headings:
Drainage--Mexico--Mexico, Valley of--History.
Díaz, Porfirio, 1830-1915--Ethics.
Mexico City (Mexico)--History
Mexico--History--1867-1910.
Pearson (Firm)
Pearson (S.) and Son, Ltd.
Princeton subject headings:
Díaz, Porfirio, 1830-1915--Ethics.
Drainage--Mexico--Mexico, Valley of--History.
Mexico City (Mexico)--History.
Mexico--History--1867-1910.
Pearson (Firm)