Faizah, R. .; Rahmat Fauzi, I. .; Kurniawan Pratama, I. .; Santoso, H. .; Muhayat, M.; Junaidi, J. Investment Feasibility Analysis of Product Diversification Programme Case Study in Sei Aek Pancur Biofertilizer Factory. J. Penelitian Kelapa Sawit 2026, 34, 97-112.