PROGNOSIS OF MECHANICAL STABILITY OF STRUCTURAL PARTICLEBOARDS BASED ON MODIFIED PHENOL-FORMALDEHYDE RESINS DURING LONG-LASTING STAY IN THE OPEN IN REAL CLIMATIC CONDITIONS. INNO [Internet]. 2026 Jan. 30 [cited 2026 Feb. 25];4(2). Available from: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/138