http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Characterization of fresh water and estuarine humic acids by molecular weight distribution
Microfilm. Ann Arbor, Mich.: University Microfilms, 1972. 1 microfilm reel : positive ; 35 mm.
Includes bibliographical references (leaves 95-98).