%0 Journal Article %T Extraction of zinc by alkyl thiophosphoric acids with emulsion liquid membranes %A Vasconcelos, Jorge M. T. %A Carvalho, Jorge M. R. %J Chemical Engineering & Technology (Cet) %V 16 %N 3 %P 213-217 %@ 0930-7516 %D 1993-06-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve