Children's Britannica  

 - 3rd. ed.  
 - London  Encyclopaedia Britannica  1985 
 - 299 p. 
<br/><br/> Vol- 18 Tracks-Walls and Fences 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias 
<br/><br/><label>Dewey Class. No.: </label>032  / C437 1985