Lilley, Ian. <br/><br/>
Prehistoric exchange in the Vitiaz Strait, Papua New Guinea / 
Ian Lilley. 
 -  1986. 
 - xxii, [534 leaves] :  ill., maps. ;  31 cm. 
<br/><br/>Thesis (PhD) -- Australian National University. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commerce, Prehistoric--Papua New Guinea--Vitiaz Strait.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Vitiaz Strait (Papua New Guinea)--Commerce.<br/>Vitiaz Strait (Papua New Guinea)--History.<br/>Siassi Islands (Papua New Guinea)--Antiquities.<br/>Sio (Papua New Guinea)--Antiquities.