Zwicky, Fritz. <br/><br/>
Discovery invention research through the morphological approach   
by Fritz, Zwicky. 
 - Toronto  Macmillan Company  1966 
 - ix, 276p. 
<br/><br/><label>LCCN: </label>69-10785 
<br/><br/><label>Dewey Class. No.: </label>509  / N692