Rapid predictions of cold tolerance in Douglas-fir seedlings using chlorophyll fluorescence after freezing.Published in:New Forests, 2004, v. 28, n. 1, p. 49, doi. 10.1023/B:NEFO.0000031331.08847.49By:Perks, Michael P.;Osborne, Bruce A.;Mitchell, Derek T.Publication type:Article