Thorbecke, Willem J. , 1892- Mankind at the crossroads : an enquiry into the causes of the global predicaments and the means to overcome them / William J. Thorbecke - Leyden : A. W. Sijthoff International Pub., 1975 - 217 p. ; 24 cm. Library has 2 cops. ISBN: 0379002868 : USD 38.00 Subjects--Topical Terms: Civilization, Modern--1950- Dewey Class. No.: 900