Piedras Negras archaeology, 1931-1939
by Linton Satterthwaite, John M. Weeks, Mary Butler, John Alden Mason

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AntiquitiesArchaeological expeditionsExcavations (Archaeology)HistoryMaya architectureMaya sculptureSocial ScienceArchaeology / AnthropologyUsumacinta River Valley (GuateSociologyArchaeologyUsumacinta River Valley (Guatemala and Mexico)