“Analisis Kualitas Tanah Helvetia Berdasarkan pH Aktual, Potensial, Bahan Organik, dan Kapur”, JICN, vol. 3, no. 02, pp. 2043–2050, May 2026, Accessed: Jul. 26, 2026. [Online]. Available: https://jicnusantara.com/index.php/jicn/article/view/7055