DIN EN ISO 8257-1:2006 Plastics - Poly(methyl methacrylate) (PMMA) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 8257-1:1998); English version of DIN EN ISO 8257-1:2006-06 has been changed from DIN 7745-1:1986 .
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