Lee, T. A., Hayden, B., & Walker, P. L. (1988). San Pablo cave and El Cayo on the Usumacinta River, Chiapas, Mexico. New World Archaeological Foundation.
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Chicago-čujuhus (17. p.)
Lee, Thomas A., Brian Hayden, juo Phillip L. Walker. San Pablo Cave and El Cayo on the Usumacinta River, Chiapas, Mexico. Provo, Utah: New World Archaeological Foundation, 1988.
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MLA-čujuhus (9. p.)
Lee, Thomas A., et al. San Pablo Cave and El Cayo on the Usumacinta River, Chiapas, Mexico. New World Archaeological Foundation, 1988.
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