PNG mining and petroleum seminar 31 August- 1 September 1992 / 
proudly sponsored by Gardens Ridgeway. 
 - Sydney :  [Gardens Ridgeway],  1992. 
 - (various pagings). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--Papua New Guinea.<br/>Mineral industries--Papua New Guinea.<br/>Petroleum--Papua New Guinea.