Piña Chán, R., & Navarrete, C. (1967). Archeological research in the lower Grijalva River Region, Tabasco and Chiapas. New World Archaeological Foundation.
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Chicago-čujuhus (17. p.)
Piña Chán, Román, juo Carlos Navarrete. Archeological Research in the Lower Grijalva River Region, Tabasco and Chiapas. Provo, Utah: New World Archaeological Foundation, 1967.
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MLA-čujuhus (9. p.)
Piña Chán, Román, juo Carlos Navarrete. Archeological Research in the Lower Grijalva River Region, Tabasco and Chiapas. New World Archaeological Foundation, 1967.
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