| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 51 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | page | |
| 52 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | page | |
| 53 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | page | |
| 54 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | page | |
| 55 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | page | |
| 56 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 57 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 58 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 59 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 60 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 61 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 62 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page | |
| 63 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | page |