@book{ Solr-ocm05783146, title = {Levels-of-growing-stock cooperative study on Douglas-fir}, series = {USDA Forest Service research paper PNW}, series = {United States Pacific Northwest Forest and Experiment Station USDA Forest Service research paper PNW}, author = {Berg, Alan B.}, editor = {Bell, John F.}, editor = {United States Pacific Northwest Forest and Experiment Station}, editor = {United States. Forest Service}, publisher = {Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station}, year = {1979}, }