NA 131
DIN Standards Committee Aerospace
Standards
[Withdrawn]
DIN 29970
DIN 29970
Aerospace; honeycomb cores of polyamide paper, phenolic resin bonded; technical specification
Title (German)
Luft- und Raumfahrt; Wabenkerne aus Polyamidpapier, phenolharzgebunden; Technische Lieferbedingungen