@ARTICLE {WONG: M.T.F, title = {Leasing loss of calcium, magnessium potassium and nitrate derived from soil, and fertilizers as influence by urea applied to undisturbed lysemeters southest Nigeria}, author = {Wong, M. T. F. and Van der Kruijs, A. C. M. B. and Juo, A. S. R. }, journal = {Fertilizer Research}, year = {1992}, volume = {31}, pages = {281--289}, }