Creator
- United States. Soil Conservation Service8
- Upper Willamette Resource Conservation And Development Project5
- Upper Willamette Resource Conservation And Development Area2
- Englerth, George H. (George Henry), 1907 19911
- Forest Products Laboratory (U.S.)1
- Hansbrough, J. R. (John Raymond), 1903 19901
- Oregon Coastal Conservation And Development Commission1
- Oregon State University. Agricultural Experiment Station1
- Simonson, Gerald Herman, 1927 1
- United States. Division Of Forest Pathology1
- Wert, Stephen R.1
- Williams, Lynn H.1