| 其他書名 | 2 Lectures Delivered at the Summer Conference Course in Industrial Relations, Industrial Relations Section, Department of Economics and Social Institutions, Princeton University, Sept. 21, 1931 |
| 出版 | Equitable life assurance society of the United States, 1931 |
| URL | http://books.google.com.hk/books?id=QhgOo2GOVbMC&hl=&source=gbs_api |