Huff, Sandy
The Mayan Calendar Made Easy/ Sandy Huff. - S/L S/E 1984 - 40 p. [28 p.] [28 p. ilus.]
Incluye estudio: Bio-mathematical basis of the mayan calendar de José Díaz Bolio, 1994.
F1435 C14 H83
The Mayan Calendar Made Easy/ Sandy Huff. - S/L S/E 1984 - 40 p. [28 p.] [28 p. ilus.]
Incluye estudio: Bio-mathematical basis of the mayan calendar de José Díaz Bolio, 1994.
F1435 C14 H83