Dershowitz, Nachum. <br/><br/>
Calendrical calculations / 
Nachum Dershowitz, Edward M. Reingold. 
 - Cambridge ;  New York :  Cambridge University Press,  1997. 
 - xxi, 307 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0521564743 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calendar--Mathematics.