Porterfield, Richard L. <br/><br/>
Impacts of the changing quality of timber resources  : proceedings of a joint meeting of the ... 

 - Madison, Wis. :  Forest Products Research Society,  (1979) 
 - 49 p.  : ilus. ; mapas ; gráfs. 
 - Proceedings  ; P-78-21 .
 - Proceedings  ; P-78-21 .
<br/><br/><label>LCCN: </label>52347 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bosques--E.U.A.<br/>Industrias forestales--E.U.A.<br/>Recursos forestales--E.U.A.