http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Complete from 600 a.D. to the present. An ill. standard catalogue with valuations
FRIEDBERG, Robert: -- Gold-Coins of the world. Complete from -- 600 a.D. to the present. An ill.standard -- catalogue with valuations. Rev.and ed. -- by Jack Friedberg, 2.ed. - New York: -- The Coin and Currency Inst.(1965) . -- 416 S. mit zahlr. Abb. 4° -- 1968:2397. -- En.<