mardi 5 décembre 2017

sent by Roman SUDZIK

That FDC celebrates 150th anniversary of birth of Maria Sklodowska-Curie


sent by Eduardo SUDNICKI


sent by Nail AYDEMIR


sent by Richard DOUSSET


dimanche 3 décembre 2017

vendredi 1 décembre 2017

jeudi 30 novembre 2017

sent by Leonhard REITH


sent by Ivan LOEW

Ivan sent his cover via Brno with cancellation about "100 years of Czech Astronomical Society"


sent by Nikola KAZAKOV


jeudi 23 novembre 2017

mercredi 22 novembre 2017