Ferrel, William,  1817-1891. <br/><br/>
Converging series expressing the ratio between the diameter and the circumference of a circle. 
By William Ferrel. 
 - [Washington,  Smithsonian Institution,  1871] 
 - 6 p.  33 cm. 
 - Smithsonian contributions to knowledge. [vol. XVIII, art. 5] Smithsonian Institution publication 233. .
<br/><br/><label>LCCN: </label>s  13000081  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.<br/>Circle.
<br/><br/><label>LC Class. No.: </label>Q11  / .S68