Effects of fertilization on Douglas-fir in southwestern Washington
By: Paul Heilman.
Series: Circular / Washington Agricultural Experiment Station -- 535; Circular (Washington Agricultural Experiment Station) -- 535
Publisher: Washington Agricultural Experiment Station, College of Agriculture, Washington State University
Published: 1971
Place of publication: [Pullman]
Language: eng
Number of pages: 23
Subjects: Douglas fir; Forest soils -- Fertilization
Notes: Caption title.

Bibliography: p. 17-18.