Williams, Thomas R <br/><br/>
Advancing  variable star astronomy    the centennial history of the American association of variable star observers 
Thomas R Williams and Michael Saladyga 
 - Cambridge  Cambridge University  2011 
 - xv, 432p. 
<br/><br/><label>ISBN: </label>9780521519120 
<br/><br/><label>Subjects--Index Terms: </label>Variable star Astronomical observations Astronomy 
<br/><br/><label>Universal Decimal Class. No.: </label>524.33  / WILL