Efficiency and Responsibility in Education 2018. International Conference. Efficiency and Responsibility in Education 2018 : Proceedings of the 15th International Conference : 7th - 8th June 2018, Prague, Czech Republic. 1st Edition. Praha : Czech University of Life Sciences Prague, 2018. online 424 s. ISBN 978-80-213-2858-7. ISSN 2336-744X.