The 2020 IAI Book of proceedings

Education and social sciences conference, Business and economics conference. vedecká konferencia (10.02.2020 : Barcelona, Spain) The 2020 IAI Book of proceedings : Education and social sciences conference, Business and economics conference, Barcelona, Spain, 10 February 2020. -- 1. vyd. -- Skopje : International Academic Institute, 2020. -- ISBN 978-608-4881-07-0

1. zborníky konferencií
BB301