| Title | Evidence of Climatic Effects in the Annual Rings |  
 | Publication Type | Journal Article |  
 | Year of Publication | 1920 |  
 | Authors | Douglass, AE |  
 | Journal | Ecology |  
 | Volume | 1 |  
 | Issue | No. 1 |  
 | Keywords | annual rings, climate, climatic, Douglass, Ecology, effect, effects, evidence, historic, rings, tree |