@article{398691, recid = {398691}, author = {Weeks, John M. and Sachse, Frauke. and Prager, Christian M.}, title = {Maya daykeeping three calendars from highland Guatemala / [electronic resource] :}, publisher = {University Press of Colorado,}, address = {Boulder, Colo. :}, pages = {xii, 221 p. :}, year = {2009}, url = {http://library.usi.edu/record/398691}, }