DIN ISO 23404:2021-09 草案 信息和文獻 用于保護的紙張和紙板 測量揮發物對紙張纖維素的影響 (ISO 23404:2020)
Draft Document - Information and documentation - Papers and boards used for conservation - Measurement of impact of volatiles on cellulose in paper (ISO 23404:2020); Text in German and English