Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One?
Bowditch, Charles P.
Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One? [electronic resource] / Charles P. Bowditch - Project Gutenberg, 2012 - Project Gutenberg 39259 .
Public domain in the USA.
Electronic text
Was the Beginning Day of the Maya Month Numbered Zero (or Twenty) or One? [electronic resource] / Charles P. Bowditch - Project Gutenberg, 2012 - Project Gutenberg 39259 .
Public domain in the USA.
Electronic text