Colbert, E. H., Au. <br/><br/>
Evolution of the vertebrates 

 - 4th 
 - New York  John Wiley  1991 
<br/><br/><label>ISBN: </label>0471850748 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Vertebrates
<br/><br/><label>Dewey Class. No.: </label>560  / C48E