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May 26, 2012
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gum' bichro'mate proc"ess




a contact printing method in which the image is formed on a coating of sensitized gum containing a suitable colored pigment and potassium or ammonium dichromate. Also called gum' dichro'mate proc"ess.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

gum benzoingumbo
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