TY - JOUR T1 - Researches on the Colouring-Matters Derived from Coal-Tar. --III. Diphenylamine JF - Proceedings of the Royal Society of London (1854-1905) VL - 13 SP - 341 EP - 347 PY - 1863/01/01/ UR - http://dx.doi.org/10.1098/rspl.1863.0077 M3 - doi:10.1098/rspl.1863.0077 AU - Hofmann, A. ER -