%0 Book %T Magyar Tudomány 2021/04 %B %D 2021 %R %@ %U https://mersz.hu/hivatkozas/matud202104_po-heading-id_ubWv3L1GUEKDQbHTQOg8dw_p21#matud202104_po-heading-id_ubWv3L1GUEKDQbHTQOg8dw_p21