Richards, E. G. <br/><br/>
Mapping time : the calendar and its history /  
E. G. Richards. 
 - xxi, 438p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0192862057 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy
<br/><br/><label>Index Terms--Genre/Form: </label><br/>History.<br/>Calendars.
<br/><br/><label>Dewey Class. No.: </label>529.322  / R514