Proceedings.
Subtitle: Conducted by Michigan Technological University, Lake States Council of Industrial Foresters [and] Forest Service, U.S. Dept. of Agriculture.
Contributors: Michigan. Technological University, Houghton; Lake States Council of Industrial Foresters; United States. Forest Service.
Published: 1969
Place of publication: [Houghton? Mich.]
Language: eng
Number of pages: 166
Subjects: Sugar maple -- Congresses