Não informado. (2020). Steels Supplement to Metals Abstracts. Metals Information.
Lua i Stíl Chicago (17ú heag.)Não informado. Steels Supplement to Metals Abstracts. Metals Park, Ohio: Metals Information, 2020.
Lua MLA (8ú heag.)Não informado. Steels Supplement to Metals Abstracts. Metals Information, 2020.
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