Dahlberg, E. (1992). Exploration data contouring. Program Diklat Tim Pengelolaan IWPL MIGAS IAGI Geoservices.
Chicago Style (17th ed.) CitationDahlberg, Eric. Exploration Data Contouring. Program Diklat Tim Pengelolaan IWPL MIGAS IAGI Geoservices, 1992.
MLA (8th ed.) CitationDahlberg, Eric. Exploration Data Contouring. Program Diklat Tim Pengelolaan IWPL MIGAS IAGI Geoservices, 1992.
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