| http://www.w3.org/ns/prov#value | - Sensitizing compounds, such as compounds of copper, thallium, cadmium, rhodium, tungsten, thorium, iridium and mixtures thereof, can be present during precipitation of the silver halide emulsion, as illustrated by Arnold et al U.S. Pat. No. 1,195,432; Hochstetter U.S. Pat. No. 1,951,933; Overman U.S. Pat. No. 2,628,167; Mueller U.S. Pat. No. 2,950,972; Sidebotham U.S. Pat. No. 3,488,709 and Rosecr
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