Ruechardt, Edward <br/><br/>
Light :  Visible and invisible / 
by Edward Ruechardt ; translated by Frank Gaiynor 
 - Ann Arobor :  University of Michigan Press,  1958 
 - 201 p. :  ill., plate. ;  21 cm. 
 - Ann Arbor science library .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 4.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light
<br/><br/><label>Dewey Class. No.: </label>535.1