Samson Aregawi และผู้แต่งคนอื่นๆ. (2016) Investigation of the compressive strength of Portland cement mixtures by application of bacteria Sporosarcina pasteurii. ISEC PRESS:ม.ป.ท.Samson Aregawi และผู้แต่งคนอื่นๆ. 2016. Investigation of the compressive strength of Portland cement mixtures by application of bacteria Sporosarcina pasteurii. ม.ป.ท.:ISEC PRESS;Samson Aregawi และผู้แต่งคนอื่นๆ. Investigation of the compressive strength of Portland cement mixtures by application of bacteria Sporosarcina pasteurii. ม.ป.ท.:ISEC PRESS, 2016. Print.