http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
v, 430 pages : illustrations (some color), maps (some color) ; 28 cm.
edited by David R. Lageson ; co-edited by Stephen G. Peters and Mary M. Lahren.
"GSA field guide" also appears in subtitle.
Field guide (Geological Society of America) ; 2