Johnsen, K H <br/><br/>
Growth, shoot phenology and physiology of diverse seed sources of black spruce: II. 23-year-old field trees.  [electronic resource] 

 -  Tree physiology  Mar 1996 
 - 375-80 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1758-4469 
<br/><br/><label>Standard No.: </label>10.1093/treephys/16.3.375  doi