UNE 11020-1:1992 CHAIRS AND STOOLS FOR PUBLIC AND DOMESTIC USE. SPECIFICATION FOR PERFORMANCE REQUIREMENTS. PART 1: MATERIALS AND SUPERFICIAL FINISHES.
1992UNE 11020-1:1992 CHAIRS AND STOOLS FOR PUBLIC AND DOMESTIC USE. SPECIFICATION FOR PERFORMANCE REQUIREMENTS. PART 1: MATERIALS AND SUPERFICIAL FINISHES.