Sears, Norman G; Lamb, John ; Furen, Walter E.; Pelzner, Adrian ; Hedman, Victor H.; McWay, Daniel M.; Hogan, Jim ; Trask, David B.. 1969. Engineering Field Notes: Volume 1 Numbers 1 through 7. 6971 3801. Missoula, MT: U.S. Department of Agriculture, Forest Service, Missoula Technology and Development Center. 64 p.

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