Volume XLVI number 2: December 2025 text monographic eng

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82 pages ; 28 cm Librea, Jesha Faye T., Guanzon, Clarence R., Valencia, Paolo S., Camposano, Jomar Christian J., Caram, Rosabelle Louise A., Buquiz, Lowell P. (December 2025). Characterization of locally sourced perlite from Camarines Sur, Philippines. Philippine Engineering Journal, v. 46(2), pp.1-15. SERIALS PER 620 P5521 2025 0117-5564 260720 20260720094917.0