Anna : A unit of land area in South Asia. In Pakistan, the anna equals 20.17 square yards or 16.86 square meters. In Nepal, the anna is nearly twice that size: 31.8 square meters, 342 square feet, or 38 square yards
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}