| 其他書名 | An Appraisal of Its Economic Impact in the Postwar Period |
| 出版 | U.S. Department of Health, Education, and Welfare, Social Security Administration, Office of Research and Statistics, 1966 |
| URL | http://books.google.com.hk/books?id=Y6pqAAAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |