Amateur telescope making  pt. 2 
edited by A. G. Ingalis 
 - U.S.A.  Scientific American  1972 
 - vi, 650p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telescopes
<br/><br/><label>Universal Decimal Class. No.: </label>520.2  / AMA-2