FRIEDBERG, Robert  

    Gold coins of the world : complete from 600 a.d. to the present: an illustrated standard catalogue with valuations / by Robert Friedberg; revised and edited by Jack and Arthur Friedberg. —  4th.ed. —  New York : The Coin and Currency Institute, Inc., 1976. —  467 p. : il. ; 28 cm. — 
    1976
    ISBN 0-87184-304-8
   1. MOEDAS DE OURO.