General requirements for the competence of testing and calibration laboratories (ISO/IEC DIS 17025:2016); German and English version prEN ISO/IEC 17025:2016
Ships and marine technology - Flanges on castings extra light duty - DN 32 to DN 50, PN up to 25, DN 65 to DN 125, PN up to 10 - Principles of design— 3 стр.