Whitford, Edward Everett. ** 5125.18 The Pell equation. — New York. The Author. 1912. iii, 193 pp. Diagrams. 24 cm., in 8s. Bibliography, pp. 113-161.
[This work is kept on the Special Libraries Floor.]
 
This card was printed at the Boston Public Library, June 10, 1913.
Ho0537 — Pell equation.