Puerto Rico Highway 568 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Puerto Rico Highway 568" in English language version.

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Global rank English rank

low place

1,052^nd place

594^th place

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163^rd place

185^th place

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537^th place

476^th place

6,714^th place

4,445^th place

box.com

Luis F. Pumarada O’Neill (1991). "Los Puentes Históricos de Puerto Rico" (PDF) (in Spanish). p. 68. Retrieved 10 March 2020.

"Revista de Obras Públicas de Puerto Rico, Febrero 1929". Colección Puertorriqueña UPR RP (in Spanish). 1929. pp. 22–23. Retrieved 9 August 2023.

"Corozal, Memoria Núm. 61" (PDF). Puerto Rico Planning Board (in Spanish). 1955. Retrieved 22 February 2020.
"Toa Alta, Memoria Núm. 57" (PDF). Puerto Rico Planning Board (in Spanish). 1955. Retrieved 9 August 2023.
"Orocovis, Memoria Núm. 47" (PDF). Puerto Rico Planning Board (in Spanish). 1955. Retrieved 9 August 2023.
"Coamo, Memoria Núm. 33" (PDF). Puerto Rico Planning Board (in Spanish). 1953. Retrieved 9 August 2023.

National Geographic Maps (2011). Puerto Rico (Map). 1:125,000. Adventure Map (Book 3107). Evergreen, Colorado: National Geographic Maps. ISBN 978-1566955188. OCLC 756511572.