Childrens Encyclopedia of Knowledge Book of Learning 

 - London:  Collins,  1971. 
 - 194p.;  ill.;  26cm 
<br/><br/><label>ISBN: </label>0001051032 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General encyclopedic works
<br/><br/><label>Dewey Class. No.: </label>030  / CHI