@ARTICLE {VANLAUWE, title = {Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by Mucuna pruriens, Lablab purpureus, and maize}, author = {Vanlauwe, B. and Nwoke, C. and Diels, J. and Sanginga, P. and Carsky, R. and Deckers, J. and Merckx, R. }, journal = {Soil Biology and Biochemistry}, year = {2000}, volume = {32}, pages = {2063--2077}, nwoke, o.c.:author={Vanlauwe, B., Nwoke, O.C. and Diel, J. and Sanginga, N. and Carsky, R. and Deckers, J. and Merckx, R.}, }