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WikiPedia: Guihulngan http://www.guihulngancity.com http://www.reactnegor.org //tools.wmflabs.org/geohack/geohack.php?language=v... http://www.guihulngan.gov.ph http://www.nscb.gov.ph/activestats/psgc/default.as... https://web.archive.org/web/20130624021310/http://... https://web.archive.org/web/20180806064517/http://...