Treasury of knowledge 

 - 120 pages :   colour illustrations ;   25 cm 
 - Treasury of knowledge .
 - Treasury of knowledge .
<br/><br/><label>ISBN: </label>9833003303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Question and answer.
<br/><br/><label>Dewey Class. No.: </label>032.02