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.) 
 - University Park, Pa. :  Agricultural Information Services, College of Agriculture, Department of Plant Pathology, Pennsylvania State University for the USDA-Forest Service,  1978 
 - Various pagings. :  col. ill. ;  28 cm. 
<br/><br/> Air pollution training institute 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--Wounds and injuries--Diagnosis--Handbooks, manuals, etc.--East (U.S.)<br/>Trees--Effect of air pollution on--Handbooks, manuals, etc.--East (U.S.)<br/>Trees--Diseases and pests--Identification--Handbooks, manuals, etc.--East (U.S.)<br/>Forest inse
<br/><br/><label>Dewey Class. No.: </label>634.960973