Reproduction of color drawings, film transparencies and photographs
作者： Weir Ralph
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lens.org 参考文章(4)
Conrad G. Briel, Method of making photographic mats ,(1936)
Joseph A. H. Hatt, Process and means for making color-printing plates ,(1925)
William J. Wilkinson, Correction of negatives ,(1938)
John D Johnsen, Process for producing color-printing plates. ,(1916)