Index of Oil-Shale and Shale-Oil Patents, 1946-56: A Supplement to Bulletins 467 and 468: (In Three Parts) [Part 3]. European Patents and Classification
| Year: | 1959 |
|---|---|
| Document Type: | N/A |
| Issuing Agency: | United States. Bureau of Mines. |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 574.3 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc12729/ |