Helmholtz, Hermann von <br/><br/>
Popular scientific lectures 

 - New York  Dover  1962 
 - xii, 286 p. 
<br/><br/><label>ISBN: </label>248278 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>502  / HEL