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|Material Type:||Government publication, National government publication|
|All Authors / Contributors:||United States. Forest Service. North Pacific District.; United States. Department of Agriculture.|
"In cooperation with the state forester and the superintendent of public instruction of the State of Oregon."
|Description:||ii, 30 pages : illustrations ; 23 cm.|
|Series Title:||Miscellaneous publication (United States. Department of Agriculture), no. 20.|
|Responsibility:||[issued by the north Pacific district of the Forest Service, United States Dept. of Agriculture].|