The world of knowledge :  a question & answer book 
publisheb by Dhingra publishing house 
 - Ghaziabad :  Dhingra publishing house ,  2016 
 - 120 p. ;  ill.  25 cm. 
<br/><br/>Includes photographs 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World G. K.--Children<br/>Science and technology<br/>Human body<br/>History<br/>Living world
<br/><br/><label>Dewey Class. No.: </label>030  / WOR