URI
Notation
772
Caption
Photographic systems, processes (especially those using inorganic substances or physical phenomena)
Including
Processes using the silver group, metals. Silver. Copper. Mercury. Electrography. Electrostatic, electrophotographic processes. Xerography. Enamels. Photoceramics. Dyeline processes. Light-sensitive colloid, resin and polymer processes generally
Broader class
77  Photography and similar processes