http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Erdwiss. FB -- LE BAS, Michael John: -- Carbonatite-Nephelenite Volcanism. An African -- History. - London [usw] : Wiley(1977).347 S.m.Abb. -- u.20 Taf. 4° -- Mi