Steel, Duncan,  1955- <br/><br/>
Marking time :  the epic quest to invent the perfect calendar / 
Duncan Steel. 
 - New York :  J. Wiley,  c2000. 
 - ix, 422 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 399-400) and index. 
<br/><br/><label>ISBN: </label>0471298271 (alk. paper) 
<br/><br/><label>LCCN: </label>99051369 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calendar--History.
<br/><br/><label>LC Class. No.: </label>CE6  / .S74 2000 
<br/><br/><label>Dewey Class. No.: </label>529/.3