[1]
E. Osabohien, 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”, Pakistan Journal of Scientific & Industrial Research, vol. 48, no. 6, pp. 433–435, Dec. 2005.