Osabohien, E., E. O. Adaikpoh, and F. I. Nwabue. “Analysis and Purification of Nkalagu (Nigeria) Limestone and Poultry Eggshells for the Production of Paint Grade Calcium Carbonate: Short Communication”. Biological Sciences - PJSIR 48, no. 6 (December 26, 2005): 433–435. Accessed November 24, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/1440.