Gregory, Joseph Tracy,  1914 - <br/><br/>
Revision of the Gymnarthridae American Permian microsaurs / 
Josep h T. Gregory, Frank E. Peabody, and Llewelyn nI. Price 
 - New Haven:  [s.l.],  1956 
 - vi, 77 p. :  ill. ;  27 cm 
<br/><br/>Includes bibliography: p. 71- 73 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gymnathridae<br/>Paleontology--Permian<br/>Paleontology--Comanche Co.--Oklahoma
<br/><br/><label>Dewey Class. No.: </label>Q 567.6 GRE