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1by Ffolliott, P.F., Forest Service, Fort Collins, Colo. (USA). Rocky Mountain Forest and Range Experiment Station eng 26130, Thorud, D.B., Arizona Univ., Tucson (USA). School of Renewable Natural Resources eng 22268“...Tucson, Ariz. (USA) SRNR, Coll. of Agriculture, UA...”
Published 1975
Texto bibliotecaFAO IT