Number | Date | Country | Kind |
---|---|---|---|
7124/73 | May 1973 | CH |
Number | Name | Date | Kind |
---|---|---|---|
2270118 | Gaspar | Jan 1942 | |
2564238 | Sprung | Jul 1951 | |
3620744 | Schellenberg et al. | Nov 1971 | |
3772020 | Smith | Nov 1973 | |
3868253 | Marthaler et al. | Feb 1975 |
Entry |
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Newman, "The Chemistry of Stabilization Processing", British Journal of Photography, vol. 114, No. 5601, pp. 1009-1012, 1967. |