EVS-EN 473:1997 Mittepurustava katsetamise (NDT) personali kvalifitseerimine ja sertifitseerimine : põhialused = Qualification and certification of NDT personnel : general principles
Technical data
URL: http://www.digar.ee/id/nlib-digar:210534
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URL: http://www.digar.ee/id/nlib-digar:210534