(1)
Sombut, V. .; Ohama, P. .; Kumpun, S. .; Kulnides, N. .; Yingyongnarongkul, B.- ek . Separation of Blue Ballpoint Pen Inks- A Comparison of Solvent Systems on Thin Layer Chromatography Techniques. Suan Sunandha Sci & Tech 2022, 5, 20-27.