Singh, Ashok Kumar. <br/><br/>
Science and technology for civil services examinations /  
Ashok Kumar Singh. 
 - /   . 
 - New Delhi :   McGraw Hill Education (India) ,   2008, rep. 2014. 
 - 646p. :   figs. ;   21cm .  
<br/><br/>includes glossary and appendix 
<br/><br/><label>ISBN: </label>9780070655485  RS375.00 
<br/><br/><label>Subjects--Index Terms: </label>SCIENCE AND TECHNOLOGY TECHNOLOGY 
<br/><br/><label>Dewey Class. No.: </label>600  / SIN/S