HUTABARAT, N. A.; NAIBAHO, W.; SIAHAAN, S. H. Performance analysis of automatic grass chopper and grass vacuuming machine with gasoline engine drive system. EDUCTUM: Journal Research, [S. l.], v. 5, n. 2, p. 294–301, 2026. DOI: 10.56495/ejr.v5i2.1625. Disponível em: https://jurnal.larisma.or.id/index.php/EJR/article/view/1625. Acesso em: 25 may. 2026.