Ruhen, Olaf <br/><br/>
Mountains in the clouds 
Olaf Ruhen 
 - London  Angus & Robertson  1963 
 - 239p., [20]p. of plates  ill.  22cm 
<br/><br/> Map on lining papers 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Papua New Guinea--History