Nora, Silvia, 		Mawardi, Surip, 		Kuswardani, Retna, 		Mawardi, Surip, 		Wijoyo, Hadi, 		Gandaseca, Seca, AND 		Novita, Aisar.
" Analysis of Land Suitability for Arabica Coffee in Toba Regency, North Sumatra, Indonesia" <em>International Journal of Biosciences and Biotechnology</em> [Online], Volume 11 Number 1 (30 September 2023)