Hübl, Arthur Freiherrn von Three-colour photography : three-colour printing and the production of photographic pigment pictures en natural colours - Londres : A.W. Penrose & Co., 1904 - 148, XXXII p. : il. ; 22 cm Subjects--Topical Terms: Fotografia--Tècnica Fotografia en colors Universal Decimal Class. No.: IM 77.3-7 HÜB