Vickers, A F <br/><br/>
Patterns of Interaction 

 - Melbourne  Longman cheshire  1977 
 - vii,120; ill 
<br/><br/><label>ISBN: </label>701517085 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maps<br/>Photographs<br/>Plantation agriculture<br/>Sahara desert<br/>Subsistence agriculture