Barbera, H. (1973). Rich nations and poor in peace and war: Continuity and change in the development hierarchy of seventy nations from 1913 through 1952. Lexington Books.

Barbera, Henry. Rich Nations and Poor in Peace and War: Continuity and Change in the Development Hierarchy of Seventy Nations from 1913 Through 1952. Lexington, Mass.: Lexington Books, 1973.

Barbera, Henry. Rich Nations and Poor in Peace and War: Continuity and Change in the Development Hierarchy of Seventy Nations from 1913 Through 1952. Lexington Books, 1973.