1990-8644 1990-8644 S1990-86442018000300030 República del Ecuador 00 06 2018 00 06 2018 14 63 30 34

(200 2) (200 2) (201 2) (200 8) (200 9) 5 4-9 (201 4) (201 3) (200 5) (197 6) (200 4) (199 9) (200 8) (200 1) (198 8)