Leidy, Joseph,  1823-1891. <br/><br/>
A Memoir on the extinct sloth tribe of North America / 
By Joseph Leidy. 
 - Washington :  New York :  Smithsonian Institution ;  Putnam,  1855. 
 - 2 p. l., [3]-68 p., :  xvi plates  33 cm. 
 - Smithsonian contributions to knowledge ;  [v. 7, art. 5] .
 - Smithsonian Institution Publication ;  72 .
<br/><br/> Sudocs number: SI 1.6:7. 
<br/><br/><label>LCCN: </label>s  13000032  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sloths.<br/>Mammals, Fossil.<br/>Paleontology.
<br/><br/><label>LC Class. No.: </label>Q11  / .S68 vol. 7, art. 5 
<br/><br/><label>Gov. Doc. Class. No.: </label>SI 1.6:7