Westin, J <br/><br/>
Seasonal variation in photochemical activity and hardiness in clones of Norway spruce (Picea abies).  [electronic resource] 

 -  Tree physiology  Oct 1995 
 - 685-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1758-4469 
<br/><br/><label>Standard No.: </label>10.1093/treephys/15.10.685  doi