Johnson, A H <br/><br/>
Climate and red spruce growth and decline in the northern Appalachians.  [electronic resource] 

 -  Proceedings of the National Academy of Sciences of the United States of America  Aug 1988 
 - 5369-73 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0027-8424 
<br/><br/><label>Standard No.: </label>10.1073/pnas.85.15.5369  doi