@ARTICLE {KANG:1984, title = {Potassium and magnesium response of cassava grown in an Ultisol in southern Nigeria}, author = {Kang, B. }, journal = {Fertilizer Research}, year = {1984}, month = {December}, volume = {5}, number = {4}, pages = {403--410}, issn = {0167-1731}, note = {RTB; Root and Tuber; Cassava}, doi = {10.1007/bf01049120}, }