4208steel engravings (visual works)TTen-USVocabulário Colaborativo em Artes e Arquitetura active approved steel engravings (visual works)Prints made by the "steel engraving (printing process)," in which plates of steel or steel-faced copper are used, having replaced the use of less durable copper plates in the early 19th century.

Source: Art & Architecture Thesaurus

http://vocab.getty.edu/page/aat/300041363

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