STRUCTURE AND PROPERTIES OF FIR (ABIES BORISII – REGIS MATTF.) AND SPRUCE (PICEA EXCELSA LINK) AND THEIR INFLUENCE ON WOΟD IMPREGNABILITY*. INNO [Internet]. 2026 Jan. 30 [cited 2026 Feb. 25];3(2). Available from: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/178