The Porcupine placer district, Alaska
By: by Charles W. Wright.
Series: U.S. Geological survey. Bulletin; no. 236
Publisher: Govt. Print. Off.
Published: 1904
Place of publication: Washington
Language: eng
Number of pages: 35
Subjects: Geology -- Alaska.; Gold mines and mining -- Alaska.
Notes: Subject series: A, Economic geology, 37; B, Discriptive geology, 42.