Slumping prices hit OPEC’s 2019 oil revenue as exports shrink on production cuts2020-07-132020-07-13/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px
OPEC’s 13 members suffered an 18.4% contraction in their oil export revenue in 2019 on…
