Norma A. Esguerra and Mario Y. Guzman 2002. Structural and Economic Comparisons Between the Conventional and Stacking Method of Laying Locally Manufactured Non-Load Bearing Concrete Hollow Blocks (CHBs). The Vector: International Journal of Emerging Science, Technology and Management (IJESTM). 11, 1 (Dec. 2002). DOI:https://doi.org/10.69566/ijestm.v11i1.157.