R. F. · Robert D. Friedberg · Robert D. Friedberg PhD · Robert F.
Coin & Currency Inst · Ediciones Paidós
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Gold Coins of the World: From Ancient Times to the Present; an Illustrated Standard Catalog With Valuations | 978-0-87184-309-8 | 2017 | Arthur L. Friedberg · Ira S. Friedberg |
| Paper Money of the United States | 978-0-87184-521-4 | 2017 | Arthur L. Friedberg · Ira S. Friedberg |
| Paper Money of the United States: A Complete Illustrated Guide with Valuations | 978-0-87184-721-8 | 2017 | Arthur L. Friedberg · Ira S. Friedberg |
| Paper money of the United States: A complete illustrated guide with valuations | 978-0-87184-511-5 | 1986 | |
| Paper money of the United States: A complete illustrated guide with valuations | 978-0-87184-510-8 | 1981 | |
| Práctica clínica de terapia cognitiva con niños y adolescentes: Conceptos esenciales | 978-84-493-1689-0 | 2005 | |