TY JOUR TI DIAGNOSTIC CHARACTERISTICS OF COMMON SAND MARTIN RIPARIA RIPARIA L., 1758 AND PALE SAND MARTIN RIPARIA DILUTA SHARPE ET WYATT, 1893 KW common sand martin KW pale sand martin KW diagnostic characteristics JO Bulletin of KSAU AU Evtikhova, A.N. AU Savchenko, A.P. PY 2014 IS PB Krasnoyarsk State Agrarian University