PUSPITASARI, S. Sampul Depan 30 2 2012. Jurnal Penelitian Karet, [S. l.], v. 30, n. 2, p. i-xii, 2012. DOI: 10.22302/ppk.jpk.v30i2.198. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/198. Acesso em: 22 jul. 2024.