REVISTA FILATELICA ARGENTINA – 125 YEARS OF SOFIRA
MOST RARE STAMPS FOUND BY SOFIRA – RAILWAYS DAY – RIVADAVIA 5c, 6º ISSUE – NEW FAKE – DUTCH PAPERS AT SAN MARTIN 1923 ISSUE – TELEGRAPH STAMPS FROM BS AS – 1º COMMEMORATIVE OF THE WORLD AND HISTORY (2º PART)
UNIVERSAL STAMPS FALSIFICATIONS
PRACTICAL GUIDE TO IDENTIFY FALSIFICATIONS FOR BEGGINERS – A.C. DE DOCO 1979
