THESSALONIKI FAIR: Thessaloniki, 4 – Thousands of people gave a rousing welcome this morning to the prime minister, Field Marshal Alexandros Papagos, who arrived by train at 8.50 a.m. from Athens accompanied by the minister for public works, Constantine Karamanlis, for finance, Constantine Papayiannis, for trade, Panayis Papaligouras, and the minister to the prime minister, Georgios P. Rallis. (…) Later, the prime minister officially opened the 19th Thessaloniki International Fair. The opening was also attended by the deputy minister oftrade minister of the Soviet Union, Mr Ptiskin. ARRESTS OF COMMUNISTS: How the latest conspiracy against state security was thwarted. Full light has been shed on the sinister espionage organization of the Communist Party of Greece (KKE). The six main members who have been arrested and their assistants. The action of the security forces. OLYMPIC STADIUM: Today at 11 a.m. a protest rally is to be held in Maroussi against the Olympic Committee’s plans to expropriate an area in Kalogreza to build an Olympic stadium.