TY JOUR TI THE EFFECT OF A CONVEYER STEP ON GAS EXCHANGE OF THE “LETTUCE - SOIL-LIKE SUBSTRATE” SYSTEM KW 2 gas exchange KW a soil-like sub-strate (SLS) KW biological-technical life support sys-tem (BTLSS) KW biological oxidation of plant wastes KW conveyor plant cultivation JO Bulletin of KSAU AU Velichko, V.V. AU Ushakova, S.A. AU Tikhomirov, A.A. PY 2016 IS PB Krasnoyarsk State Agrarian University