@book{ Solr-ocm35022416, title = {Response of a 110-year-old Douglas-fir stand to urea and ammonium nitrate fertilization}, series = {PNW research note}, author = {Harrington, Constance A.}, editor = {Miller, Richard E.}, editor = {Pacific Northwest Forest and Range Experiment Station (Portland, Or.)}, publisher = {Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service}, year = {1979}, pages = {8}, }