http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Magnetic models for the United States for 1985
1 online resource (iii, 26 pages) : maps.
by Norman W. Peddie and Audronis K. Zunde.
Title from title screen (viewed June 22, 2018).
Includes bibliographical references (page 5).