Agricultura en el suroeste de Estados Unidos prehistórico (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Agricultura en el suroeste de Estados Unidos prehistórico" in Spanish language version.

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archaeology.org

"Top 10 Discoveries of 2009 – Early Irrigators – Tucson, Arizona." [1], acceso 3 de junio de 2012

"What is a Trincheras Site?" Arizona State Museum, University of Arizona. [2], acceso 1 de julio de 2012

Gregoris, Linda M. "The Hohokam." sonorensis, Vol 16, nº. 1, Spring 1996, http://www.desertmuseum.org/members/sonorensis/week8.php, acceso 1 de junio de 2012

Periman, Richard D. "The influence of prehistoric Ancestral Puebloans cobble-mulch agricultural features on northern Rio Grande landscapes" http://www.fs.fed.us/rm/pubs_rm/rm_gtr272/rm_gtr272_181_188.pdf, accesso 1 de julio de 2012

"Marana History, "http://www.marana.com/DocumentCenter/Home/View/115 Archivado el 17 de diciembre de 2012 en Wayback Machine., acceso 30 de junio de 2012