Αγαπητέ Πρωτοπόρε Letter by the Democratic Youth Movement "Grigoris Lambrakis" (DKNGL) in Katerini on youth clubs - Πρωτοπόρος; Protoporos; Δ.Κ.Ν.Γ.Λ. Κατερίνης; Democratic Youth Movement "Grigoris Lambrakis" (DKNGL)