 | Avalanches Control. | (2) |
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 | Snow avalanches : a handbook of forecasting and control measures. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1968. | |
| Artillery control of avalanches along mountain highways / by Noel C. Gardner and Arthur Judson. Gardner, Noel C. Fort Collins, Colo. : Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1970. | |
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