War : the causes, efffects and control of international viole nce, analysis /
by Carl J. Friedrich... teaching aids by Ronald B. Edgerton...
- Washington, D.C. : National Council for the Social Studies, Natio nal Association of Secondary-School principals, departments of the Nati onal education association, 1943.
- 83 p. ; 23 cm.
- problems in American life ; Unit no. 11 .