http://book.klll.cc/ebooks/author/47780.opds?sort_order=release_date 2026-01-12T14:40:33Z Books by Pérez, Juan Pío Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2026-01-12T14:40:33Z https://es.wikipedia.org/wiki/Juan_P%C3%ADo_P%C3%A9rez See also: es.wikipedia 2026-01-12T14:40:33Z https://book.klll.cc/ebooks/57961.opds Mexican Copper Tools: The Use of Copper by the Mexicans Before the Conquest; and the Katunes of Maya History, a Chapter in the Early History of Central America, With Special Reference to the Pio Perez Manuscript. Philipp J. J. Valentini