?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Baltazar+Vilchis%2C+Carlos+Alberto&rft.aufirst=Carlos+Alberto&rft.aulast=Baltazar+Vilchis&rft.title=An%C3%A1lisis+del+impacto+del+Covid-19+en+las+microempresas+del+sector+comercio+al+por+menor+mediante+an%C3%A1lisis+factorial+(Atlacomulco%2C+Estado+De+M%C3%A9xico%2C+2021).&rft.date=6+Abril+2022&rft.degree=Doctoral