2218-3620

2218-3620

S2218-36202023000400215

Cuba

Ecuador

Cuba

00 08 2023

00 08 2023

15 4 215 224

2021 43 1 1

1-11

2018 22 7 7

655-68

2021 3 3

1-17

2007 13 23 23

213-34

2020 23 2 2

287-306

2012 4 1 1

83-92

2018 76 270 270

247-70

2008 22 3 3

191-206

2007 28

27-34

2020 39 1 1

Cuba. Ministerio de Educación 2020

2020 39 1 1

2015

2019 15 70 70

404-8

2016 22 2 2

2021 39

356-73

2012 15 1 1

101-12

2015 61

1-11