Diagnosing injury to Eastern forest trees : a manual for identifying damage caused by air pollution, pathogens, insects and abiotic stresses - National Acid Precipitation Assessment Program (U.S.); United States. Forest Service; Pennsylvania State University. Department of Plant Pathology (University Park, Pa. : Agricultural Information Services, College of Agriculture, Department of Plant Pathology, Pennsylvania State University for the USDA-Forest Service, 1978)
Air pollution training institute
Keywords: Trees -- Wounds and injuries -- Diagnosis -- East (U.S.) -- Handbooks, manuals, etc; Trees -- Effect of air pollution on -- East (U.S.) -- Handbooks, manuals, etc; Trees -- Diseases and pests -- East (U.S.) -- Identification -- Handbooks, manuals, etc; Forest inse