"El complejo Mdanos de Samalayuca, Sierra Presidio y Sierra ...
"El complejo Mdanos de Samalayuca, Sierra Presidio y Sierra ...
"El complejo Mdanos de Samalayuca, Sierra Presidio y Sierra ...
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Yeend Warren. S.F., 1979, Sand and gravel. U.S. Geol. Survey Prof. Paper<br />
820. United States Mineral Resources.<br />
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