Extraction of Copper(II)From Sulphates Phase using O,O Diphenyl [(E)-2-Cyano-1-Methylvinyl] Amido Phosphate and O,O Diphenyl [(E)-2-Cyano-1-Methylvinyl]Amido Thio Phosphate In Methane Dichloride. Latakia University Journal -Basic Sciences Series, v. 39, n. 3, 27 Feb.2019.