| Author: | Marks, Graham W. |
|---|---|
| Additional Authors: | Mills, Ralph., Cossey, Frank. |
| Year: | 1948 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7424. |
| Subjects: | Optical instruments |
| Workbenches | |
| Link: | https://hdl.handle.net/2027/mdp.39015077577719 |