Hackett, Ian J. <br/><br/>
The spring of civilisation / 
Ian J. Hackett. 
 - [Great Britain] :  [Campaign for Earth Federation],  1973. 
 - 144 p. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World history<br/>Civilization
<br/><br/><label>Dewey Class. No.: </label>909