Textiles. Quantitative chemical analysis. Part 21. Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanon)
Conformity assessment system for the use of nuclear energy. Welded joints of parts made of steels of different structural classes for equipment and piping of nuclear power installations. The ultrasonic examination procedure
€10
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