Berg, Alan B.; Dilworth, J. Richard; Bruce, David; Tarrant, Robert F.; Trappe, James M.; Hildenbrand, Homer A.; Hopkins, Howard R.; Hunt, Everett; Schallau, Con H.; Stonex, Dick; Behrens, Curley; Larson, Gale; Whitmore, Ed; Makey, Thomas H.; Schoppert, George; Speisschaert, Darrel; Schuetz, Dick; Richardson, Bob(Corvallis : School of Forestry, Oregon State University, 1972., 1972-09)
