| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 26 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-16 | page | |
| 27 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-16 | page | |
| 28 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | issue | |
| 29 |
|
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 30 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 31 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 32 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 33 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 34 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 35 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page | |
| 36 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | page |