Seven-year response of 35-year-old Douglas-fir to nitrogen fertilizer
By: R. E. Miller and L. V. Pienaar.
Contributors: Pienaar, L. V.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research paper PNW -- no. 165.; USDA Forest Service research paper PNW -- 165.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1973
Place of publication: Portland, Or
Language: eng
Number of pages: 24
Subjects: Trees -- Growth.; Forest soils -- Fertilization.; Nitrogen fertilizers.
Notes: Cover title.

Bibliography: p. 19-21.