Sziklai, O. <br/><br/>
Further information on the variation of Douglas-Fir (Pseudotzuga menziesii (Merb.) Franco) in its native habitat 

 - (s.l. :  s.e.),  (s.a.) 
 - 16 h.  ; gráfs. 
<br/><br/><label>LCCN: </label>57405 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pseudtsuga menziessii.