?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Brian+Johan&rft.aulast=Rosales+Cove%C3%B1a&rft.au=Rosales+Cove%C3%B1a%2C+Brian+Johan&rft.title=Plan+de+emergencias+ante+crisis+sanitarias+en+la+empresa+Syarquim+de+control+de+plagas+en+Guayaquil%2C+Ecuador&rft.date=29+Abril+2022&rft.degree=Masters