http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Copper extraction from aqueous solutions with liquid emulsion membranes
by D.N. Nilsen, B.W. Jong, and A.M. Stubbs.
Distributed to depository libraries in microfiche.
Includes bibliographical references (page 16).
Report of investigations (United States. Bureau of Mines) ; 9375