TY - JOUR T1 - A Discourse concerning the Methods of Approximation in the Extraction of Surd Roots. By John Wallis, S. T. D. and Savilian Professor of Geometry at Oxford JF - Philosophical Transactions (1683-1775) VL - 19 SP - 2 EP - 11 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1695.0002 M3 - doi:10.1098/rstl.1695.0002 AU - Wallis, J. ER -