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