Ruechardt ,Eduard <br/><br/>
Light Visible and Invisible.   
  

 - 3rd 
 - Michigan  University  1965 
 - 201 pgs, 20.2 cms.index 
<br/><br/> B   
<br/><br/>  
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light & Paraphotic Phenomena
<br/><br/><label>Dewey Class. No.: </label>535 Rue/Lig