Botting, Douglas. <br/><br/>
Humboldt and the cosmos. 

 - London :  Joseph,  1973. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 285-286. 
<br/><br/><label>ISBN: </label>0718111370 
<br/><br/><label>LCCN: </label>74163783 
<br/><br/><label>Subjects--Personal Names: </label><br/>Humboldt, Alexander von, 1769-1859. Humboldt, Alexander von, 1769-1859. 
<br/><br/><label>LC Class. No.: </label>Q143.H9  / B67 1973 
<br/><br/><label>Dewey Class. No.: </label>500.9/2/4  B