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  1. 1

    Environmental aspects of nickel production. Part 1: Sulphide pyrometallurgy and nickel refining: a technical review.

    Publié 1987
    “…Industry and Environmental Office, UNEP,…”
    Livre
  2. 2

    Tanneries and the environment : a technical guide to reducing the environmental impact of tannery operations.

    Publié 1991
    “…United Nations Environmental Programme (UNEP), Industry and Environment Office,…”
    Livre