@INBOOK {JUO:1980d, title = {Nitrogen profile in a kaolinitic alfisol under fallow and continuous cultivation}, author = {Juo, A. S. R. }, year = {1980}, month = {December}, type = {Nitrogen cycling in West African ecosystems: proceedings of SCOPE/UNEP Workshop on Nitrogen Cycling in West Africa Ecosystems, IITA, Ibadan, Nigeriia, December 11 - 15, 1978}, pages = {181--189}, isbn = {91-7190-007-1}, }