Beecher, Charles Emerson,  1856-1904. <br/><br/>
Outline of natural classification of the Trilobites. 
By Charles E. Beecher. 
 - [New Haven,  1897] 
 - p. [89]-106, 181-207  illus.  24 cm. 
<br/><br/> "From the American journal of science, vol. III, March, 1897." 
<br/><br/><label>LCCN: </label>ca 17001098  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trilobites.
<br/><br/><label>LC Class. No.: </label>QE821  / .B418