The evolution of photography : with a chronological record of discoveries, inventions, etc., contributions to photographic literature, and personal reminiscences extending over forty years (1890)
Werge, John · London : Piper & Carter : John Werge · leaf 114
fourth period. GELATINE. … Dr. R. L. MADDOX. From Phoiogra;ph hy J . Thomson. GELATmO-BROMIDE EMULSION 1871. R. KENNETT. From Photograph by J. Werge, i88y. GELATINO-BROMIDE PELLICLE 1873 DRY PLATES 1874
Photography
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