Gopalakrishnan,N . <br/><br/>
Indian scientific heritage. 
N Gopalakrishnan. 
 - Thiruvananthapuram :   Indian Institute of Scientific Heritage, 
 - 396p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science, Ancient.
<br/><br/><label>Dewey Class. No.: </label>509.54  / GOP/I