Section 13
SEC. 13. Effectivity clause.&mdashThis Act shall take effect upon its approval. Approved, June 17, 1961.
RA 3187 Section 13
SEC. 13. Effectivity clause.&mdashThis Act shall take effect upon its approval. Approved, June 17, 1961.
CitationRA 3187 Section 13 (LawPlayer, data as of July 4, 2026)
Source: Supreme Court E-Library, Republic of the Philippines. Philippine laws are public documents (works of the government).