Madina, Paul, and OgahJ. J. 2023. “PRODUCTIVITY OF LIVING STONE POTATO (Plectranthus Esculentus L.) AS INFLUENCED BY ROW SPACING AND NUTRIENT SOURCES IN BILLIRI, GOMBE STATE, NIGERIA”. FUDMA JOURNAL OF SCIENCES 3 (2), 39 - 51. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1479.