Trees and shrubs of the Penobscot Experimental Forest, Penobscot County, Maine /

by Safford, Lawrence O., Frank, Robert M., Little, Elbert L. (Elbert Luther), 1907-2004
Published 1969

Growth response to fertilizer in a young aspen-birch stand /

by Czapowskyj, Miroslaw M.
Published 1979

Foliar nutrient status of young red spruce and balsam fir in a fertilized stand /

by Czapowskyj, Miroslaw M.
Published 1980