Seafatullah, M., M. A. Hoque, M. S. Islam, M. M. Islam, and M. N. Islam. “Effect of Cow Dung, Biogas Slurry and Vermicompost on Phosphorus Adsorption Behavior of Soil”. Journal of Scientific Research, vol. 7, no. 3, Sept. 2015, pp. 167-75, doi:10.3329/jsr.v7i3.23756.