1976 at the Northeastern Forest Experiment Station
Forest Service, U.S. Department of Agriculture, Northeastern Forest Experiment Station, 1977 - Forests and forestry - 40 pages
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acid precipitation Air pollution Annual Northeastern Forest Appalachian hardwoods areas balsam fir bark beetles Better trees birch black cherry budworm Christmas tree cultivars cutting Dochinger Dutch elm disease effects Eighth Annual Northeastern Environ evaluation Ferulic acid Forest Ecosystem Forest Experiment Station forest land fungus genetic grapevines growth gypsy moth habitat hardwood hardwood tree grades illus increased industry Insect Work Conference laboratory landscapes symposium proceedings larvae Logger lumber ment metropolitan landscapes symposium metropolitan woody vegetation Northeast Northeastern Forest Experiment Northeastern Forest Insect northern hardwood oak wilt Ohio pallets parasitoid percent pest Pinchot Inst pine populations potential pulpwood pulpwood production recreation Robert roots sawlogs seed seedlings Serratia marcescens Serv silvicultural soil spoils Stomatal sugar maple Symp Tech techniques tested tion trails trees for metropolitan urban USDA viron West Virginia wildlife woody plants wounds yellow birch yellow-poplar yields