Walsh, J. H. <br/><br/>
Conquest / 
by J. H. Walsh ; illustrated by Frank Wootton 
 - Calcutta :  Longmans Green,  1945 
 - 170 p. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions<br/>Patents.
<br/><br/><label>Dewey Class. No.: </label>608.7