Encyclopaedic history of science and technology / 
edited by G.R. Chhatwal 
 - New Delhi :  Anmol Publications,  1994 
 - 12 v. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>8170418453  RM38.87 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--History<br/>Technology--History