London: Kegan Paul, Trench, Trubner & Co., . Revised Edition. Slim octavo (22cm.); publisher's green cloth, gilt-lettered spine; xii,164,7(ads)pp.; tables throughout. Corners bumped, contemporary ownership inscription to half title with neat checkmarks throughout publisher's ads in rear, else Very Good or better. Forms part of the series the International Library of Sociology and Social Reconstruction.