Philippines (Republic). Board of Technical Surveys and Maps. Topographical Maps Division. (1966). Topographical maps: Descriptive folder. s.n.
Chicago Style (17th ed.) CitationPhilippines (Republic). Board of Technical Surveys and Maps. Topographical Maps Division. Topographical Maps: Descriptive Folder. [Manila: s.n, 1966.
MLA (9th ed.) CitationPhilippines (Republic). Board of Technical Surveys and Maps. Topographical Maps Division. Topographical Maps: Descriptive Folder. s.n, 1966.
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