De Morgan, Augustus. 3935-73—**E.5016.53 Trigonometry and double algebra. London. Taylor, Walton & Maberly. 1849. xi, 167 pp. Diagrams. Sm. 8°. The copy on 3935.73 lacks pp. 161-167.
[The second copy is kept on the Special Libraries Floor.]
 
Sept. 6, I9co *D6650 — Algebra. — Trigonometry.