Hà Minh, Tuân. “IMPACT OF NPK FERTILIZER AMOUNT ON GROWTH, PRODUCTIVITY AND QUALITY OF MOUNTAIN YAM IN BAC KAN PROVINCE”. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY 8, no. 3 (November 17, 2022). Accessed November 23, 2024. https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/788.