http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Late Palaeozoic species of Ellisonia (Conodontophorida)
evolutionary and palaeoecological significance
56 pages : illustrations (some color) ; 28 cm.
Peter H. von Bitter and Glen K. Merrill.