00705nam a22002411 4500 agr53000301 DLC 20260227111017.0 870807s1953 dcua b f00000 eng c agr53000301 //r87 U.S. Dept. of Agr. Libr./ICU ICU QC929.S7 U46 551.31 United States. Forest Service. Avalanche handbook. [Washington, 1953] iv, 146 p. illus. 27 cm. Cover title. Replaces The Alta avalanche studies, issued by the U.S. Forest Service, Intermountain Region. Bibliography: p. 146. Avalanches. Snow. 11501 11501