The AAVSO variable star atlas / 
prepared by Charles E. Scovil. 
 - Cambridge, Mass. :  Sky Pub. Corp.,  c1980. 
 - 1 case (178 charts) : all ill. ; 37 cm. 
<br/><br/><label>ISBN: </label>093334628X 
<br/><br/><label>LCCN: </label>83225026  
<br/><br/><label>LC Class. No.: </label>ATLAS