1. Coupled transport membranes for metal recovery — Phase II;Babcock,1980
2. Spin flash drying recovers copper from spent etchant;Beeby;Chem. Process.,1983
3. Solvent extraction recovery of metals: the MECER process;Cox,1984
4. A process for regenerating an ammoniacal etching solution;Reinhardt,1979
5. Recovery of metals from liquid effluents;Anderssen,1983