horn, k. h. (1967). structural changes and productivity. the institute of national planning.
Chicago-Zitierstil (17. Ausg.)horn, karl heinz. Structural Changes and Productivity. cairo: the institute of national planning, 1967.
MLA-Zitierstil (9. Ausg.)horn, karl heinz. Structural Changes and Productivity. the institute of national planning, 1967.