Borlagdan, P. C. Residue handling and soil disturbance of an inclined time furrow opener. Philippine engineering journal.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBorlagdan, Paterno C. "Residue Handling and Soil Disturbance of an Inclined Time Furrow Opener." Philippine Engineering Journal .
एमएलए (9वां संस्करण) प्रशस्ति पत्रBorlagdan, Paterno C. "Residue Handling and Soil Disturbance of an Inclined Time Furrow Opener." Philippine Engineering Journal, .
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