@book{ Solr-ocm42285190, title = {Instar development of the Douglas-fir tussock moth in relation to field temperatures}, series = {Research note PNW}, author = {Beckwith, R. C.}, editor = {Grimble, David G.}, editor = {Weatherby, Julie C.}, editor = {Pacific Northwest Research Station (Portland, Or.)}, publisher = {U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station}, year = {1993}, }