Christopher, John, <br/><br/>
The guardians / 
John Christopher. 
 - London :  Heinemann Educational,  1973. 
 - 156 p. ;  20 cm. 
 - New Windmill Series  176 .
<br/><br/> Originally published, London: Hamilton, 1970. 
<br/><br/><label>ISBN: </label>0435121766 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's stories.