H. C. · Helen C. · Helen Y. Colburn
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Branch of Petroleum Geology bibliography, 1992: USGS Open-File Report 93-330 | 978-1-288-92868-2 (1-288-92868-8) | 2013 |
| USGS Branch of Petroleum Geology bibliography, 1988: USGS Open-File Report 89-477 | 978-1-288-83861-5 (1-288-83861-1) | 2013 |