421 | Ecuador. Bibliography

1984. ECUADOR, HISTORIA POSTAL Y CATALOGO DE MARCAS PREFILATELICAS. Leo J.Harris, Percy Bargholtz y Rodrigo Paez T. The Collectors Club y Federación Interamericana de Filatelia. Nueva York, 1984.

Automatically generated translation

1984. ECUADOR, POSTAL HISTORY AND CATALOG OF PREPHILATELIC MARKS. Leo J.Harris, Percy Bargholtz and Rodrigo Paez T. The Collectors Club and the Inter-American Philately Federation. New York, 1984.