Walker, Sears Cook,  1805-1853. <br/><br/>
Researches relative to the planet Neptune. 
By Sears C. Walker. 
 - [Washington,  Smithsonian Institution,  1849] 
 - 60 p.  32 cm. 
 - Smithsonian contributions to knowledge [vol. II, art. 1] Smithsonian Institution publication 3. .
<br/><br/><label>LCCN: </label>s  13000002  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Neptune (Planet)
<br/><br/><label>LC Class. No.: </label>Q11  / .S68 vol. 2