@ARTICLE {HULUGALLE:1984, title = {Soil physical changes and crop root growth following different methods of land clearing in western Nigeria}, author = {Hulugalle, N. and Lal, R. and ter Kuile, C. H. H. }, journal = {Soil Science}, year = {1984}, volume = {138}, pages = {172--179}, issn = {0038-075X}, note = {RTB; Root and Tuber}, }