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- [5] RECOVERY OF COPPER FROM CONCENTRATED SOLUTION BY SOLVENT-EXTRACTION USING KELEX 100 CIM BULLETIN, 1973, 66 (732): : 75 - 83
- [7] RECOVERY OF WASTE METALS BY SOLVENT-EXTRACTION ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1986, 191 : 256 - INDE