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Capa Benítez, Lenny Beatriz, Herrera Freire, Alexander and Herrera Freire, Alex Humberto Potencialidades productivas en la zona 7 Ecuador, una estrategia sostenible. Universidad y Sociedad, Jun 2021, vol.13, no.3, p.144-149. ISSN 2218-3620

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Herrera Freire, Alexander Geovanny, Herrera Freire, Alex Humberto and Chávez Cruz, Gonzalo Junior Nic 41 y su incidencia en el precio por caja de banano ecuatoriano, período 2019-2020. Universidad y Sociedad, Jun 2021, vol.13, no.3, p.100-109. ISSN 2218-3620

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Manchay Reyes, Gina Judith, Herrera Freire, Alex Humberto and Ruiz Cueva, Mayra Beatriz Costeo basado en actividades un enfoque costo beneficio para las organizaciones. Universidad y Sociedad, Oct 2019, vol.11, no.5, p.243-248. ISSN 2218-3620

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