http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
as determined by impatience to spend income and opportunity to invest it
Revision of the author's The rate of interest, published in 1907.
Dr. Charles E. Ferguson and Dr. Melvin L. Greenhut Economics Collection.
Includes bibliographical references and index.