Publisher's Synopsis
Excerpt from Memoria Sobre el Valle de México, Su Desagüe y Saneamiento
El ilustre viajero Humboldt evaluó la planicie elíptica, ex cluyendo aquella cuchilla, en leguas cuadradasl y la longitud del muro de montañas que la. Encierra en 67 leguas; lo que da. Para la extension total de la cuenca hidrográfica, comprendida. En este perímetro, más de 4001eguas cuadradas.
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