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Avalanche Handbook - Alpine Snow and Avalanche Research Project - Rocky Mountain Forest and Range Experiment Station - Agriculture Handbook 489 Perla, Ronald I./M. Martinelli, Jr.Softcover. Fort Collins, USDAFS, 1st, 1976, Book: Very Good, Dust Jacket: None, 238 pages. Softcover. Black & white illustrations. Light wear. Clean, tight copy. Record # 612907
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