Distributed to depository libraries in microfiche.
"August 1987"--Title page verso
Bibliography (note)
Includes bibliographical references (page 3).
Author
Bilderback, David E., author.
Type of content
text
Type of medium
unmediated
Type of carrier
volume
Added author
Carlson, Clinton E., author.
Intermountain Research Station (Ogden, Utah)
Other form:
Online version: Bilderback, David E. Effects of persistent volcanic ash on Douglas-fir in northern Idaho. Ogden, UT : U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, [1987] (OCoLC)624873978