ABSTRACT
It is interesting to compare the following accounts of the same place, the Valley of Mexico, which describe the situation in 1984, and some 470 years earlier.
1 Valley of Mexico (1984)
The following description of the Valley of Mexico, provided by the Office for Urban Development and Ecology of the Mexican Government, formed part of its submission to the Man and the Biosphere Programme (MAB) of the United Nations (Sanchez de Carmona 1984).
