SWS International Scientific Conference on Social Sciences 2019

Social science 2019. SWS international scientific conference (6. : 26.08.-01.09.2019 : Albena)

SWS International Scientific Conference on Social Sciences 2019 : conference proceedings, Albena, 26 August - 1 September 2019. Vol. 6, no. 4, Education and educational research. -- 1. vyd. -- Sofia : STEF92 Technology, 2019