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: Research paper PNW -- 113.; 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.