Humboldt, Alexander von,  1769-1859 <br/><br/>
Cosmos :  A Sketch of the Physical Description of the Universe, Vol. 1  [electronic resource] / 
Alexander von Humboldt 
 -  Project Gutenberg,  2005 
 - Project Gutenberg  14565 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text 
<br/><br/><label>Subjects--Index Terms: </label>Science -- History Physical geography Cosmography Astronomy 
<br/><br/><label>LC Class. No.: </label>Q