Asimov, Isaac,  1920-1992, <br/><br/>
The clock we live on / 
by Isaac Asimov, illustrated with diagrams by John Bradford. 
 - Revised edition 
 - 172 pages :  illustrations ;  21 cm 
<br/><br/> The author presents the "story of time", describing the complications that can arise from such simple things as the earth's rotation on its axis. He explains why the moon was the basis for the first year, why the lunar year doesn't match the seasons. The numbering of years, naming of days of the week, vagaries of Easter, and calendar reform are [covered]." Publisher's note. 
<br/><br/><label>LCCN: </label>65012072  
<br/><br/><label>Nat. Bib. No.: </label>GB65-12822 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>010265071  Uk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time--Juvenile literature.<br/>Calendars.<br/>Clocks and watches.<br/>Time.<br/>Time.
<br/><br/><label>Subjects--Index Terms: </label>Astronomy Time calendar 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Juvenile works