Case, E. C. <br/><br/>
The environment of vertebrate life in the late paleozoic in North America :   a paleogeographic study. 

 - Washington :  Carnegie Institution,  1919. 
 - 272 p. ;  30 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleogeografía
<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>551.83(73)