Dzinavatonga K, Medupe T, Prinsloo L, E. Ebenso E. Energy Dispersive X-ray Fluorescence Analysis of Pre and Post-1850 Historical Documents Obtained from the National Library of South Africa. ajc [Internet]. 2013 Oct. 9 [cited 2024 Nov. 25];25(16):9384-6. Available from: https://asianpubs.org/index.php/ajchem/article/view/25_17_124