Adriani S.A. Siahaan, Erwin M. Harahap, Chairani Hanum, Abubakar Karim, Halus Satriawan, Ernawita. The Correlation of Elevation, Soil Chemical Properties and Yield of Coffea arabica L. in Shaded Conditions: Yield of Coffea arabica L. in Shaded Conditions. Pakistan Journal of Scientific & Industrial Research [Internet]. 2022 Oct. 20 [cited 2024 Apr. 19];65(3):282-91. Available from: http://v2.pjsir.org/index.php/biological-sciences/article/view/2987