Encyclopaedic history of science and technology. :  History of science / 
G.R Chhatwal. 
 - New Delhi :  Anmol publications,  1994. 
 -  Vol. 1 .
<br/><br/><label>ISBN: </label>8170418453 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Encyclopaedias.<br/>Technology--Encyclopaedias.
<br/><br/><label>LC Class. No.: </label>Q121  / .E53