PUSPITASARI, S. Sampul Depan 33 2 2015. Jurnal Penelitian Karet, [S. l.], v. 33, n. 2, p. i-xvii, 2016. DOI: 10.22302/ppk.jpk.v33i2.210. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/210. Acesso em: 22 jul. 2024.