Dr. Boudker photographed during one of his seminars given at CERN on the Novosibirsk plans for particle-antiparticle colliding beam experiments. Dr. Boudker gave two seminars during his visit, entitled "Current electron-electron and electron-positron colliding beam experimentation at Novosibirsk" and "The construction of colliding beam machines for 25 GeV proton-antiproton and 3 to 5 GeV electron-positron experiments at Novosibirsk".