The MK process at 50 years  proceedings of the Workshop of the Vatican observatory on The MK process at 50 years, a powerful tool for astrophysical insight, held in Tuscon, AZ, USA, Sep 1993 
edited by C.J. Corbally, R.O. Gray, and R.F. Garrison. 
 - California  Astronomical Society of the Pacific  1994 
 - [various pagings.] 
<br/><br/><label>ISBN: </label>0-937707-79-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MK Process<br/>MK Spectral classifications
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / ASP-60