0102-4698 0102-4698 S0102-46982021000100104 10.1590/0102-469824670 Brazil Brazil Brazil 00 00 2021 00 00 2021 37

2019 2. ed. 1987 2012 2000 2006 2. ed. 2019 a 2018 2019 b 2017 a 2017 b 2ª ed. HERÁCLITO 1998 2018 2018 3ª. ed 2016 133-52 PTAHOTEP 2017