EN
Book Reviews: Andrzej Indrzejczak, Janusz Kaczmarek, and Michał Zawidzki (editors), “Trends in Logic XIII. Gentzen’s and Jaśkowski’s Heritage. 80 Years of Natural Deduction and Sequent Calculi”, Wydawnictwo UŁ, Łódź (Poland), 2014, 269 pages, ISBN 978-83-7969-161-6.