Knowlton, F. H. <br/><br/>
Contributions to the Geology and Paleontology of San Juan County, New MÚxico. Flora of the fruitland and kirtland formations. 

 - Washington  Government Printing Office  1916 
 - pp. 327-353 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA