2448-718X 2448-718X S2448-718X2020000200527 10.20430/ete.v87i346.1076 00 06 2020 00 06 2020 87 346 527 541

1935 49 2 2 285-305 1938 6 2 2 97-112 1938 48 189 189 26-41 1939 1937