Length and its measurement 

 -  Longman and Penguin Books, 
 - 24p.;  ill.  22cm 
<br/><br/><label>ISBN: </label>0582340144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530  / LEN