Nursery fertilization of Douglas-fir seedlings with different forms of nitrogen
By: M.A. Radwan, G.L. Crouch, H.S. Ward.
Contributors: Crouch, Glenn LeRoy, 1929-; Ward, H. S.
Series: USDA Forest Service research paper PNW -- 113.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1971
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir -- Seedlings.; Douglas fir -- Fertilizers.; Nitrogen fertilizers.
Notes: Cover title.