50 space years of mankind: April 12, the world celebrated the 50th anniversary of Yuri Gagarin’s flight and Cosmonautics Day, wh...

50 space years of mankind: April 12, the world celebrated the 50th anniversary of Yuri Gagarin’s flight and Cosmonautics Day, which is now considered international by the decision of the UN General Assembly // Soviet Russia.- 2011. - No. ... (April 14).- 2011. -.Electronic copy source: Moscow Fires