| 其他書名 | Its Sources and Distribution, 1919, 1920 and 1921 |
| 出版 | National Bureau of Economic Research, Incorporated, 1925 |
| 主題 | Business & Economics / Economics / General |
| ISBN | 05988303919780598830395 |
| URL | http://books.google.com.hk/books?id=tmsDejuuTRsC&hl=&source=gbs_api |