MANAGING THE SOILS OF SUB-SAHARAN AFRICA

[31] Lal R., 1981, Tropical agricultural hydrology, P131

[32] SOIL-EROSION PROBLEMS ON ALFISOLS IN WESTERN NIGERIA .6. EFFECTS OF EROSION ON EXPERIMENTAL PLOTS [J]. GEODERMA, 1981, 25 (3-4) : 215 - 230

[33] LAL R, 1983, IITA MONOGR, V2

[34] LAL R, 1970, IITA P SER, V2

[35] LAL R, 1976, IITA MONOGR, V1

[36] Lal R, 1986, LAND CLEARING DEV TR

[37] LAWES AD, 1962, SAMARU RES B, V16

[38] LEHOUEROU HN, 1981, FAO31 PLANT PROD PRO

[39] MACARTNEY JC, 1971, TROP AGR, V48, P9

[40] EFFECTS OF DESURFACING OF ALFISOLS AND ULTISOLS IN SOUTHERN NIGERIA .1. CROP PERFORMANCE [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1984, 48 (04) : 828 - 833

[31] Lal R., 1981, Tropical agricultural hydrology, P131

[32] SOIL-EROSION PROBLEMS ON ALFISOLS IN WESTERN NIGERIA .6. EFFECTS OF EROSION ON EXPERIMENTAL PLOTS [J]. GEODERMA, 1981, 25 (3-4) : 215 - 230

[33] LAL R, 1983, IITA MONOGR, V2

[34] LAL R, 1970, IITA P SER, V2

[35] LAL R, 1976, IITA MONOGR, V1

[36] Lal R, 1986, LAND CLEARING DEV TR

[37] LAWES AD, 1962, SAMARU RES B, V16

[38] LEHOUEROU HN, 1981, FAO31 PLANT PROD PRO

[39] MACARTNEY JC, 1971, TROP AGR, V48, P9

[40] EFFECTS OF DESURFACING OF ALFISOLS AND ULTISOLS IN SOUTHERN NIGERIA .1. CROP PERFORMANCE [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1984, 48 (04) : 828 - 833