Needham, Joseph <br/><br/>
Gunpowder as the Fourth Power, East and West 
Joseph Needham 
 - Hongkong  Hongkong University Press  1985  1985 
 - 70 p. 
 - Occasional Papers Series .
<br/><br/><label>ISBN: </label>9622090729 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economy -- Society -- Science -- Technology