WASET
    W. Z. Taffese,  Low-Cost Eco-Friendly Building Material: A Case Study in Ethiopia.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2012, vol. 62(2). 183 - 187
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/7965.