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Published online by Cambridge University Press: 25 January 2017
Immediately after the exploration of the Santa Isabel Iztapan mammoth site in the Valley of Mexico had been completed (see pp. 332-40) the recently created Direccion de Prehistoria of the Instituto Nacional de Antropologia e Historia of Mexico undertook further reconnaissance in the reservoir basin of Falcon Dam on the Rio Grande. Work was concentrated on the Mexican side, where Aveleyra (1951) had located nine sites with abundant lithic materials.
Publication Number 3 of the Direccion de Prehistoria, Instituto Nacional de Antropologia e Historia, Mexico, D.F.