. . "1929-09-17Z"^^ . "1860Z"^^ . . "1929Z"^^ . . . . . "W. H. Perkin"@en . "English chemist" . . . "William Henry Perkin, Jr."@en . "Perkin, William Henry Jr"@en . "For the earlier William Henry Perkin, the father of this William Henry Perkin, see Sir William Henry PerkinWilliam Henry Perkin, Jr., FRS (1860\u20131929) was an English organic chemist who was primarily known for his groundbreaking research work on the degradation of naturally occurring organic compounds."@en . "1860-06-17Z"^^ . . . . . . . . . .