Agrahari Ravi P <br/><br/>
Science and Technology for civil Services Preliminary and main examinations  

 - 8th ed. 
 - Chennai:  Mc Graw hill,  2025. 
 - 623p 
<br/><br/><label>ISBN: </label>978-93-5532-632-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Competivtive exam 
<br/><br/><label>Dewey Class. No.: </label>609.54139 AGR