Crossword clue: an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
opec
4 letters
wn-def
an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum