Tick tock:  all about the clock/ 
produced by David Boyd and Tim Wheeler. 
 - [S.l.]:  Rainbow Educational Video,  1992. 
 -  19 min.  19 min. 
<br/><br/><label>ISBN: </label>0942669827 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time.<br/>Clock and watches.
<br/><br/><label>Dewey Class. No.: </label>681.1