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"Arroyo Municipality Festivals, Places". enciclopediapr.org. Fundación Puertorriqueña de las Humanidades (FPH). Archived from the original on February 14, 2019. Retrieved February 14, 2019.
"ARROYO". LexJuris (Leyes y Jurisprudencia) de Puerto Rico (in Spanish). February 19, 2020. Archived from the original on February 19, 2020. Retrieved September 16, 2020.
"Arroyo Municipality Festivals, Places". enciclopediapr.org. Fundación Puertorriqueña de las Humanidades (FPH). Archived from the original on February 14, 2019. Retrieved February 14, 2019.
"ARROYO". LexJuris (Leyes y Jurisprudencia) de Puerto Rico (in Spanish). February 19, 2020. Archived from the original on February 19, 2020. Retrieved September 16, 2020.
"Arroyo Bridges". National Bridge Inventory Data. US Dept. of Transportation. Archived from the original on February 20, 2019. Retrieved February 19, 2019.