Purang, Rohini  <br/><br/>
ScienceAhead- introductory / 
Rohini Purang 
 - rev. 
 - Delhi :  Orient BlackSwan pvt ltd ;  2008 
 - ill ;48p. ;  27.5cm. 
<br/><br/><label>Subjects--Topical Terms: </label>--general science
<br/><br/><label>Dewey Class. No.: </label>590.36  / RoS 2015 C1