Black's childre's encyclopedia / 
Edited by William Worthy and R. J. Unstead 
 - 4th ed 
 - London :  Morison & Gibb,  1976 
 - 2 vol. :  Illus ;  25 cm. 
<br/><br/><label>ISBN: </label>0713616822 0713616806(v.1) 0713616814(v.2) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>R 031  / B563