Organization of the petroleum exporting countries : Annual report 2012 /

Ижил төстэй зүйлс

• Aid from OPEC countries : efforts and policies of the members of OPEC and of the aid institutions established by OPEC countries.
  Хэвлэсэн: (1983)
• Aid from OPEC countries : efforts and policies of the members of OPEC and of the aid institutions established by OPEC countries.
  Хэвлэсэн: (1983)
• The world petroleum market /
  -н: Adelman, M. A.
  Хэвлэсэн: (1972)
• The world petroleum market /
  -н: Adelman, M. A.
  Хэвлэсэн: (1972)
• The other face of OPEC : financial assistance to the Third World /
  -н: .Shihata, Ibrahim F. I
  Хэвлэсэн: (1982)