Mathematics for Economics, fourth edition

by (author) Michael Hoy, John Livernois, Chris Mckenna, Ray Rees & Thanasis Stengos

General Topology

(Mathematical Expositions No. 7)

by (author) Waclaw Sierpinski
translated by C. Cecilia Krieger

Connectivity in Graphs

by (author) W.T. Tutte

The Theory of Measurements

by (author) Lucius Tuttle & John Satterly