Primary K: CombinedSecondary Di: AvalancheAuthor 1: LaChapelle, Edward R.Author 2: Atwater, MontgomeryPublication: USDA Forest Service,Date: 1961Issue: 34 p. illus.Abstract: Booklet to be a training supplement to Snow AvalanchesAbstract line 2: Handbook, no. 194e: 4422