Argentina
1976 General Mosconi Petrochemical Project
1976 General Mosconi Petrochemical Project
1976 “International Bridge” between Unzue, Argentina, and Fray Bentos, Uruguay
1976 “International Bridge” between Unzue, Argentina, and Fray Bentos, Uruguay
1976 Day of the Stamp – Birds & Flowers
1976 Day of the Stamp – Birds & Flowers
1976 Louis Braille Commemoration – Inventor of the Characters for the blind WM: 13
1976 Louis Braille Commemoration – Inventor of the Characters for the blind WM: 13