Air Transportation . By Claude E. Puffer. Philadelphia: The Blakiston Company. 1941. Pp. xxiv, 675. ($3.75) - International Air Transport and National Policy . By Oliver J. Lissitzyn. (Studies in American Foreign Relations, no. 3.) New York: Council on Foreign Relations, 45 East 65th Street. 1942. Pp. xviii, 478. ($,5.00)