Fifty-year development of douglas-fir stands planted at various spacings / 
Donald L. Reukema 
 - Washington :  United States Government Printing Office,  1979 
 - 21 p. ;  26 cm. 
 - Research paper ;  PNW-253 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Development--Douglas-fir<br/>Post report--Isle of man
<br/><br/><label>Dewey Class. No.: </label>363.379