Sitio : A name used traditionally in Mexico and the southwestern U.S. for the square legua (see legua [2]), a unit of area equal to 25 million square varas or about 1800 hectares. The word means "place"
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}
