Philippines (Republic). Board of Technical Surveys and Maps. (1960). Report on the status of surveying and mapping activities in the Philippines. s.n.].
Chicago-viite (17. p.)Philippines (Republic). Board of Technical Surveys and Maps. Report on the Status of Surveying and Mapping Activities in the Philippines. [Manila: s.n.], 1960.
MLA-viite (9. p.)Philippines (Republic). Board of Technical Surveys and Maps. Report on the Status of Surveying and Mapping Activities in the Philippines. s.n.], 1960.
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