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  1. 1

    Industrial arts and technology per Olson, Delmar Walter 1909-

    Publicat 1963
    Llibre

    Industrial arts and technology
  2. 2

    Ceramics for schools and industry in developing countries per Costales, Federico F., Olson, Delmar Walter 1909-

    Publicat 1959
    Llibre

    Ceramics for schools and industry in developing countries

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