technical coordinators, Leonard F. DeBarco ... [and others] ; sponsors, Rocky Mountain Forest and Range Experiment Station, U.S. Department of Agriculture; School of Renewable Natural Resources, University of Arizona
technical coordinators, Peter F. Ffolliott ... [and others] ; symposium sponsors, Rocky Mountain Forest and Range Experiment Station and Southwestern Region, Forest Service, U.S. Department of Agriculture [and] School of Renewable Natural Resources, the University of Arizona