SCHUMPETER, J. Theorie der wirtschaftlichen Entwicklung. Lpz., Duncker & Humblot, 1912. viii, 548 pp. Simple old hcl. bind. w. ti. label in ms., marbled edges. (Owner's entries in ink on ti.-p., a bit warped, some very light browning at beginning, but internally clean). First edition. -- Added: Id. Wie studiert man Sozialwissenschaft. 2. Aufl. München, (usw.), Duncker & Humblot, 1915. 54 pp. Brds., or. front cover laid down on front side. -- (2).