model of forest nitrogen cycling to assess the effects of management intensity on long-term productivity in Douglas-fir forests of the Pacific Northwest
By: by Joan Krzak.
Published: 1980
Language: eng
Number of pages: 232
Subjects: Nitrogen cycle -- Mathematical models.; Douglas fir.
Notes: Typescript (photocopy).

Thesis (Ph. D.)--Oregon State University, 1981.

Bibliography: leaves 167-178.