Variation of Particle Pretreatment of Subterranean Termite Attack on Particle Board From Oil Palm Trunk Waste with Phenol Formaldehyde Adhesive - Simbolon, Guido; Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara, Jln. Tri Dharma Ujung No 1 Kampus USU Medan 20155 (Program studi Kehutanan USU, 2014)