Civil Aviation and Peace. J. Parker Van Zandt Robert S. Platt Journal of Political Economy 1946 54(3), 286-286
Geopolitics: The New German Science. Andrew Gyorgy Robert S. Platt Journal of Political Economy 1945 53(4), 377-377
The Geography of World Air Transport. J. Parker Van Zandt Robert S. Platt Journal of Political Economy 1945 53(2), 184-185