U.S. Department of Agriculture, 1980. Paperback. 93pp. Thin quarto [28 cm] Stapled white and brown illustrated wraps. Very good. There are a handful of very small stains on the covers, and there is a previous owner's name is small pen on the front cover. There are tiny stains in the bottom margins of many of the pages. Item #35322
USDA Forest Service General Technical Report RM-73, June 1980.