| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 76 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 77 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 78 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 79 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 80 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 81 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page | |
| 82 |
 |
Rocky Mountain Oil and Mining Journal | 1970-03-30 | page |