Report - النظام الوطني للاعتماد · ASTM 06132 -13(2017) BS 6717-1:1993 Annex A BS 6717-1:1993 Annex B ASTM /C140M-17 ASTM C140 /C140M-17 BS 6073-1M 981 Appendix A BS 6073-1:1981Appendix

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