PUSPITASARI, S. Sampul Belakang 35 2 2017. Jurnal Penelitian Karet, [S. l.], v. 35, n. 2, p. xviii-xxiii, 2017. DOI: 10.22302/ppk.jpk.v35i2.532. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/532. Acesso em: 22 dec. 2024.