| 其他書名 | A Compendium of Basic Information Concerning the Physical Background and Natural Resources of the State of Oregon that Have Helped to Determine Its Industries, Institutions, and Civic and Social Development |
| 出版 | Oregon State Board of Higher Education, 1940 |
| URL | http://books.google.com.hk/books?id=slYmAQAAIAAJ&hl=&source=gbs_api |