Research Paper - Intermountain Forest & Range Experiment Station, Issues 51-71
U.S. Department of Agriculture, Intermountain Forest & Range Experiment Station., 1957 - Forests and forestry
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acaricides average basal area bentonite board feet board-foot burning chemicals Clark Fork Unit cloud-to-ground cost crown length crown weight density depth discharges Douglas-fir dwarfmistletoe effect Engelmann spruce equation estimate factors Figure flammability forage Forest and Range Forest Fire Forestry fuel bed grand fir grazing height illus inches increase infected Inland Empire INTERMOUNTAIN FOREST land lightning lodgepole pine measured million acres moisture content Montana national forests needles northern Idaho Northern Rocky Mountain number of trees ovulate ovulate flower percent pine stands pine type plant plots ponderosa pine prism problem production RANGE EXPERIMENT STATION Range Expt rate of spread recreation region root sample sawtimber seed seedlings silver iodide silvicultural slash soil species spruce spider mite stocking storms timber tion U.S. Forest Serv values variables volume watershed western hemlock western larch western redcedar western white pine yields