Ruchardt, Eduard, <br/><br/>
Light :  visible and invisible / 
by Eduard Ruchardt. 
 - Ann Arbor :  University of Michigan Press,  1958 
 - 201 p. :  ill. ;  22 cm. 
 - Ann Arbor science library .
 - Ann Arbor science library .
<br/><br/> Includes Indexes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light.<br/>Waves.
<br/><br/><label>Dewey Class. No.: </label>535  / RUL 1958