| 其他書名 | Laws of Ohio Pertaining to the Department of Industrial Relations and the Several Divisions Thereof, Complete to March 15, 1973 |
| 出版 | State of Ohio, Department of Industrial Relations, 1973 |
| URL | http://books.google.com.hk/books?id=DRdYAAAAYAAJ&hl=&source=gbs_api |