Douglass, A. E. <br/><br/>
Some aspects of the use of the annual ringe of trees in climatic study 

<br/><br/> Sobretiro de : Smithsonian Report for 1922. pp. 223-239,1924 
<br/><br/><label>LCCN: </label>21226 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anillos de crecimiento.