Trout studies and a stream survey of Crater Lake National Park, Oregon
By: by Orthello Langworthy Wallis.
Published: 1948
Language: eng
Number of pages: 124
Subjects: Trout.; Crater Lake National Park (Or.).
Notes: Typescript.

Map of Crater Lake National Park and vicinity, issued by the    U.S. Geological Survey, edition of 1946.

Thesis (M.S.)--Oregon State College, 1948.

Bibliography: leaves 118-120.