GUPTA , A P;ARORA, K <br/><br/>
Text book of Natural Science 

 - New Delhi  Birla Publications  1995 
 - 805 
<br/><br/> Natural ; Science 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural Sciences & Mathematics(500)
<br/><br/><label>Dewey Class. No.: </label>500 GUP