Report of court proceedings in the case of the anti-Soviet Trotskyite centre, heard before the Military Collegium of the Supreme Court of the U.S.S.R., Moscow, January 23-30, 1937, in re Y.L. Pyatakov [and others] accused of treason against the country, espionage, acts of diversion, wrecking activities, and the preparation of terrorist acts. Verbatim report.