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- ALTO RIESGO 1
- ALTOS POTENCIALES 1
- ALTURA 1
- ALUMBRADO DEL VEHÍCULO 1
- ALUMINIO 6063 1
- ALUMNOS 1
- ALUMNOS CON DISCAPACIDAD 1
- ALVEOLO 1
- ALVEOLOPLASTIA 1
- ALZHEIMER 4
- alzheimer's dementia; quality of life 1
- AMARANTO 1
- AMARRAS 1
- Amazon region of Ecuador; native plant species; introduced plant species; use of flora 1
- AMAZONIA 3
- AMAZONÍA 1
- AMBIDIESTRALIDAD 1
- AMBIENTAL 2
- AMBIENTE 5
- ambiente 1