http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
KURTEN, Bjoern: -- Pleistocene Bears of North America.1.2. -- Helsinki:Soc.pro fauna et flora Fennica -- 1966-1967. 4° -- 1.Genus Tremactos,spectacled bears. 2.Ge- -- nus Arctodus,short-faced bears. -- (Acta zoologica Fennica.115.117.) -- 1972!(Vol.1.2). -- Le.