Ah Lyter

Comparison of Typewriter Ribbon Inks by Thin-Layer Chromatography

Rl Brunelle, Jf Negri, A. A. Cantu, 1977 .

Comparison of Typewritten Carbon Paper Impressions

Ah Lyter, Ea Davis, 1982 .

Examination of Ball Pen Ink by High Pressure Liquid Chromatography

Ah Lyter, 1982 .