| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 76 |
 |
Rocky Mountain Oil and Mining Journal | 1970-06-29 | page | |
| 77 |
 |
Rocky Mountain Oil and Mining Journal | 1970-06-29 | page | |
| 78 |
 |
Rocky Mountain Oil and Mining Journal | 1970-06-29 | page | |
| 79 |
 |
Rocky Mountain Oil and Mining Journal | 1970-06-29 | page | |
| 80 |
 |
Rocky Mountain Oil and Mining Journal | 1970-06-29 | page | |
| 81 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 82 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 83 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 84 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 85 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 86 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 87 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page | |
| 88 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | page |