“QUALITY CHARACTERISTICS OF DOUGLAS FIR STEMS (Pseudotsuga Menziesii) FOR THE PRODUCTION OF MASSIVE WOOD MATERIALS”. Innovation in Woodworking Industry and Engineering design 7, no. 1 (January 30, 2026). Accessed February 25, 2026. http://innojs.ltu.bg/index.php/scjournal-inno/article/view/223.