Creator
- Oregon State University. Extension Service6
- Oregon State University. Agricultural Experiment Station2
- Ruttle, Marilyn2
- Alexander, Robert R.1
- Berry, Richard L.1
- Carey, Andrew G.1
- Cruickshank, E. Douglas1
- Cummings, T. Edwin1
- Cutshall, N. H.1
- Duncan, Andrew A.1
- Goulding, R. L.1
- Holton, Robert L.1
- Jackson, D. S.1
- Jackson, T. L. (Thomas Lloyd), 1922 1
- Mack, H. J. (Harry John), 1926 1
- Macswan, Iain C.1
- Mansour, N. S.1
- Martel, Donald J.1
- Mcmechan, Karla J.1
- Oregon. Dept. Of Geology And Mineral Industries1