Effects of atmospheric pollution on forest ecosystems : hearings before the Subcommittee on General Oversight, Northwest Power, and Forest Management of the Committee on Interior and Insular Affairs, House of Representatives, Ninety-ninth Congress, first and second sessions ...
United States.Congress.House.Committee on Interior and Insular Affairs.Subcommittee on General Oversight, Northwest Power, and Forest Management.
Washington : USGPO,
1987.
Hearings held July 16, 1985 : Washington, DC, December 2, 1986 : Eugene, OR.
Forest ecology.
Air