| 其他書名 | No. 3 in a Series of Articles Prepared for the President's Conference on Occupational Safety on how to Use Injury Statistics to Prevent Occupational Accidents |
| 出版 | U.S. Department of Labor, 1955 |
| URL | http://books.google.com.hk/books?id=f1i5UKazpw8C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |