Beck, Hanno, <br/><br/>
Alexander Von Humboldt / 
Hanno Beck. 
 - 491 páginas 
<br/><br/><label>Subjects--Personal Names: </label><br/>Humboldt, Alexander, Freiherr von,  1769-1859. 
<br/><br/><label>Dewey Class. No.: </label>923.9  / H919Yb 1971