The organic matter of the soil: I. Some data on humus, humus carbon and humus nitrogen

[1] The loess soils of the Nebraska portion of the transition region: II. Humus, humus-nitrogen and color. [J]. SOIL SCIENCE, 1916, 1 (03) : 239 - 258

[2] The determination of humus [J]. JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1910, 2 : 317 - 322

[3] ALWAY FJ, 1912, NEBR AGR EXP STA 25, P2

[4] ALWAY FJ, 1916, J AGR RES, V5, P909

[5] Ames W. J., 1914, J IND ENG CHEM, V6, P561, DOI DOI 10.1021/IE50067A010

[6] *ASS OFF AGR CHEM, 1912, U S DEP AGR BUR CHEM, V107

[7] Beijerinck MW, 1901, ABTEILUNG 2, V7, P561

[8] Briggs LJ, 1916, J AGRIC RES, V6, P721

[9] BURGESS JL, 1906, U S DEP AGR BUR SOIL, P943

[10] BURKE RTAN, 1909, U S DEP AGR BUR SOIL, P1269

[1] The loess soils of the Nebraska portion of the transition region: II. Humus, humus-nitrogen and color. [J]. SOIL SCIENCE, 1916, 1 (03) : 239 - 258

[2] The determination of humus [J]. JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1910, 2 : 317 - 322

[3] ALWAY FJ, 1912, NEBR AGR EXP STA 25, P2

[4] ALWAY FJ, 1916, J AGR RES, V5, P909

[5] Ames W. J., 1914, J IND ENG CHEM, V6, P561, DOI DOI 10.1021/IE50067A010

[6] *ASS OFF AGR CHEM, 1912, U S DEP AGR BUR CHEM, V107

[7] Beijerinck MW, 1901, ABTEILUNG 2, V7, P561

[8] Briggs LJ, 1916, J AGRIC RES, V6, P721

[9] BURGESS JL, 1906, U S DEP AGR BUR SOIL, P943

[10] BURKE RTAN, 1909, U S DEP AGR BUR SOIL, P1269