Chavit G. Abalos, Krisha Mae Jemaima B. Cabe, Ej Alfred R. Manglal-lan and Gaylord A. Frando 2023. Development of Non-Load Bearing Three-Core Stretcher Concrete Masonry Unit With Polyethylene Terephthalate Waste . The Vector: International Journal of Emerging Science, Technology and Management (IJESTM). 32, 1 (Dec. 2023). DOI:https://doi.org/10.69566/ijestm.v32i1.306.