https://www.efecon.tuiasi.ro/en/research-article-en-2/optimal-design-of-the-chemical-composition-for-glass-fibers-with-low-biopersistence-part-i-technological-approach-and-selection-of-the-interest-properties/ EFECON Thu, 25 May 2023 17:53:19 +0000 hourly 1 https://wordpress.org/?v=6.1.1