Article Australian Gem & Treasure Hunter August 1985 – “Government Subsidised Exploration for opal at Andamooka and Coober Pedy”
by J.G. Olliver and L.C. Barnes – Mineral Resources, Department of Mines and Energy South Australia
Article Australian Gem & Treasure Hunter August 1985 – “Government Subsidised Exploration for opal at Andamooka and Coober Pedy”
by J.G. Olliver and L.C. Barnes – Mineral Resources, Department of Mines and Energy South Australia