“Pre-extension demonstration of black pepper (Piper nigrum Linn.) technologies in selected districts of Ethiopia”, Int. J. Agril. Res. Innov. Tech., vol. 15, no. 1, pp. 70–77, Jul. 2025, Accessed: Apr. 29, 2026. [Online]. Available: https://ijarit.online/index.php/journal/article/view/178