TY JOUR TI ECOLOGICAL EFFICIENCY AND PROFITABILITY OF THE PROJECT OF THE POULTRY FARM ILLUMINATION ON THE PLATFORM OF HOLLOW MIRRORED TUBULAR LIGHT GUIDES KW energy-efficient lighting technologies KW energy-efficient construction KW lighting systems based on hollow tubular light guides KW natural light KW light flux KW LED lamps JO Vestnik of Astrakhan State Technical University AU Brakale Gennaro, .. AU Biryukova, S.. AU Klimantova, J.. AU Pleshkov, S.. PY 2017 IS 2017 PB Astrakhan State Technical University