MATHEMATICAL MODEL FOR PREDICTING SPECIFIC GRAVITY ACROSS A STEM OF CALAMUS MANAN. JOURNAL OF TROPICAL FOREST SCIENCE, [S. l.], v. 7, n. 2, p. 191–198, 1994. Disponível em: https://jtfs.frim.gov.my/jtfs/article/view/1814. Acesso em: 19 dec. 2025.