Definitions of small scale mining : a critical evaluation taking account of the Papua New Guinea situation /

類似資料

• Workshop [on] small scale gold mining in Papua New Guinea : proceedings /
  出版事項: (1994)
• Small scale gold mining in Papua New Guinea a preliminary summary report
  出版事項: (1983)
• Small-scale mining : a global overview /
  出版事項: (1994)
• Handbook of small-scale gold mining for Papua New Guinea /
  著者:: Blowers, Mike, 1941-
  出版事項: (1988)
• Proceedings of the Conference on Small Scale Mining in Papua New Guinea, held at the University of Technology, Lae, 4th-8th June, 1983
  出版事項: (1983)