Black's children's Encyclopaedia / 
edited by William Worthy & R.J. Unstead. 
 - London :  Adam & Charles black,  c 1961. 
 - Vols :  ill. ;  25 cm. 
<br/><br/>V. 1- (Abacus-Crusades) ; 
<br/><br/>300  300 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>032 / B561