Pickering, Edward C.  1846-1919 <br/><br/>
The Future of Astronomy  [electronic resource] / 
Edward C. Pickering 
 -  Project Gutenberg,  2005 
 - Project Gutenberg  15636 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text 
<br/><br/><label>Subjects--Index Terms: </label>Astronomy 
<br/><br/><label>LC Class. No.: </label>QB