Duncan, David Ewing. <br/><br/>
Calendar :  humanity's epic struggle to determine a true and accurate year / 
David Ewing Duncan. 
 - 1st ed. 
 - New York :  Bard,  c1998. 
 - xv, 266 p. :  ill. ;  24 cm. 
<br/><br/> "An Avon book." 
<br/><br/>Includes bibliographical references (p. 251-254) and index. 
<br/><br/><label>ISBN: </label>0380975289 
<br/><br/><label>LCCN: </label>98010434 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calendar--History.
<br/><br/><label>LC Class. No.: </label>CE6  / .D86 1998 
<br/><br/><label>Dewey Class. No.: </label>529/.3/09