THE ORGANIC-MATTER AND NITROGEN STATUS OF EAST AFRICAN SOILS

[11] NITROGEN AND ORGANIC MATTER CONTENTS OF EQUATORIAL SOILS OF COLOMBIA, SOUTH-AMERICA [J]. SOIL SCIENCE, 1948, 66 (03) : 173 - 186

[12] GREAT SOIL GROUPS IN THE EQUATORIAL REGIONS OF COLOMBIA, SOUTH-AMERICA [J]. SOIL SCIENCE, 1948, 66 (01) : 5 - 28

[13] JENNY H, 1930, MISSOURI AGR EXP STA, V152

[14] Jenny H., 1941, FACTORS SOIL FORMATI, DOI DOI 10.1016/0016-7061(95)90014-4

[15] LEEPER G. W., 1938, JOUR AUSTRALIAN INST AGRIC SCI, V4, P145

[16] MILNE G., 1937, East African Agricultural Journal, V3, P7

[17] Mohr E. C. I., 1930, TROPICAL SOIL FORMIN

[18] PRESCOTT JA, 1931, AUSTR CSIR B, V52

[19] The relation of organic matter and nitrogen content to series and type in virgin grassland soils [J]. SOIL SCIENCE, 1927, 24 (06) : 421 - 452

[20] ORGANIC MATTER AND NITROGEN BUILD-UPS IN SOME PUERTO-RICAN SOIL PROFILES [J]. SOIL SCIENCE, 1951, 72 (06) : 409 - 427

[11] NITROGEN AND ORGANIC MATTER CONTENTS OF EQUATORIAL SOILS OF COLOMBIA, SOUTH-AMERICA [J]. SOIL SCIENCE, 1948, 66 (03) : 173 - 186

[12] GREAT SOIL GROUPS IN THE EQUATORIAL REGIONS OF COLOMBIA, SOUTH-AMERICA [J]. SOIL SCIENCE, 1948, 66 (01) : 5 - 28

[13] JENNY H, 1930, MISSOURI AGR EXP STA, V152

[14] Jenny H., 1941, FACTORS SOIL FORMATI, DOI DOI 10.1016/0016-7061(95)90014-4

[15] LEEPER G. W., 1938, JOUR AUSTRALIAN INST AGRIC SCI, V4, P145

[16] MILNE G., 1937, East African Agricultural Journal, V3, P7

[17] Mohr E. C. I., 1930, TROPICAL SOIL FORMIN

[18] PRESCOTT JA, 1931, AUSTR CSIR B, V52

[19] The relation of organic matter and nitrogen content to series and type in virgin grassland soils [J]. SOIL SCIENCE, 1927, 24 (06) : 421 - 452

[20] ORGANIC MATTER AND NITROGEN BUILD-UPS IN SOME PUERTO-RICAN SOIL PROFILES [J]. SOIL SCIENCE, 1951, 72 (06) : 409 - 427