Basic Mathematics for Pilots and Flight Crews
Newsom, C. V., Larsen, Harold D.
New Yoek, Prentice-Hall, Inc., 1943, 8°, 153 S.

Kenya to-day
Social prerequisites for economic development
Marion Wallace Forrester
's - Gravenhage, Mouton & Co., 1962, Gr.-8°, 179 S., Abb.

Volume VII
Series Maior
Publications of the Institute of Social Studies [...]

Society and Nature
A sociological inquiry
Hans Kelsen
London, Kegan Paul, Trench, Trubner u. Co., 1946, 8°, 391 S.

"Hans Kelsen presents in 'Society and Nature' a sociological study of the relationship between the principle of retribution and the law of causality. It is at the same time a study in intellectual history illustrating the metamorphosis of a primitive idea into a scientific conception. The principal thesis of the book is that the modern notion of causality hat its origin in the primitive notion of retribution [...]" (on front flap)