J. Christopher Haley · Manuel G. Bonilla · Richard F. Meyer · Warren E. Yeend · James J. Lienkaemper · William J. Perry
1983年1月 · U.S. Government Printing Office
電子書
14
頁
關於本電子書
This history of placer mining of the gold deposits of east central Alaska, near the town of Circle, covers its development from 1893 to date and includes a summary of the regional geology and of the gravels of each creek.