TY JOUR TI PRIVATE TRADE HISTORIOGRAPHY OF NEW ECONOMIC POLICY PERIOD IN THE EASTERN SIBERIA: TO THE PROBLEM OF RESEARCH KW private trade KW Eastern Siberia KW historiography KW new economic policy (NEP) KW the Yenisei and Irkutsk provinces JO Bulletin of KSAU AU Zykova, N.L. PY 2012 IS PB Krasnoyarsk State Agrarian University