Climatic cycles and tree-growth /
Douglass, A. E.(Andrew Ellicott),1867-1962.
Washington : Carnegie Institution of Washington,
1919-1936.
Includes bibliographies.
v. 1-2. A study of the annual rings of trees in relation to climate and solar activity.-- v. 3. A study of cycles.
Tree-rings.
Meteorology
Climatology.
Sunspots.