Gupta, Vaishali <br/><br/>
Science in everyday life :   class 7 
/ by Vaishali Gupta, [et all....] 
 - New Delhi :   Oxford University Press,  2007. 
 - 242 p. :  ill, maps ;  26 cm. 
<br/><br/><label>ISBN: </label>9780195677690 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Text books--NCERT; Environmental education;
<br/><br/><label>Dewey Class. No.: </label>371.32 GUP  / 2165