APA (7th ed.) Citation

Borlagdan, P. C. Design and development of a two post rotary-percussion drilling rig. Philippine Engineering Journal.

Chicago Style (17th ed.) Citation

Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal .

MLA (9th ed.) Citation

Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal, .

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