From simple row of dots to the rain god calendar: Interpretation of the pecked cross petroglyph from the Late Postclassic Tetzcotzinco Daniel Prusaczyk

https://www.academia.edu/114286055/From_simple_row_of_dots_to_the_rain_god_calendar_Interpretation_of_the_pecked_cross_petroglyph_from_the_Late_Postclassic_Tetzcotzinco