INFLUENCE PRICE RUBBER TO INCOME SIGALANGAN TRADITIONAL MARKET TRADERS, BATANG ANGKOLA DISTRICT, SOUTH TAPANULI REGENCY. Journal Tropical Agricultural Inovation, [S. l.], v. 1, n. 1, p. 29–34, 2025. Disponível em: https://jurnal-alfatah.id/teknofarm/article/view/6. Acesso em: 1 dec. 2025.