Studies on the fossil, flora and fauna of the Western United Satates. 

 - Washington :  Carnegie Institution,  1925. 
 - 130 p. :  il. ;  26 cm 
 - Publication  349 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontología<br/>Fauna<br/>Flora<br/>Fósil
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Estados Unidos
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>56(73-15)