i, 135 pages, 4 unnumbered leaves of plates : illustrations ; 28 cm
OCLC
ocm01661772
Includes bibliographies.
1. Velson, J. S. and Clark, T. C. Transport of stone monuments to the La Venta and San Lorenzo sites.--2. Aaberg, S. and Bonsignore, J. A consideration of time and labor expenditure in the construction process at the Teotihuacan Pyramid of the Sun and the Poverty Point mound.--3. Dillon, B. D. Notes on trade in ancient Mesoamerica