Mental fatigue during continuous exercise of a single function /

Also published as thesis (Ph.D.) Columbia university, 1918.

The vaporization and physical properties of certain refractories.

pt. 1. Techniques and preliminary studies, by A. A. Hasapis, M. B. Panish and C. Rosen.--pt. 2. Experimental studies, by A. A. Hasapis and others.

Philosophy and psychology pamphlets

A collection of miscellaneous pamphlets.