Lady Marianne E. Polinga and Candy C. Mercado and Camilo A. Polinga, Formation and Evaluation of Lahar/HDPE Hybrid Composite as a Structural Material for Household Biogas Digester. journal = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2013, vol. 79(7). 487 - 490 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/16251.