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- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)7
- Radwan, M. A., 1926-7
- United States International Trade Commission7
- United States. Forest Service7
- Geological Survey (U.S.), issuing body6
- Miller, Richard E.6
- United States. Congress. House. Committee on Agriculture6
- Cochran, P. H.5
- Latta, W. C. (William Carroll), 1850-19355
- Voorhees, Edward B. (Edward Burnett), 1856-19115
- Gessel, Stanley P.4
- National Fertilizer Development Center (U.S.)4
- National Water-Quality Assessment Program (U.S.)4
- Cook, George Hammell, 1818-18893
- Gronberg, JoAnn M.3
- Leigh, G. J.3
- Lipman, Jacob G. (Jacob Goodale), 1874-19393
- Morgan, M. F. (Mont Francis), 1895-19453
- Roth, James A.3
- Stoate, T. N.3