A study of the protozoa of some American soils

[1] ALEXEIEFF A, 1924, ARCH PROTISTENKD, V50, P41

[2] Note on the protozoan fauna of the soils of the United States [J]. SOIL SCIENCE, 1924, 18 (05) : 339 - 352

[3] Influence of protozoa on the process of nitrogen fixation by Azotobacter chroococcum [J]. ANNALS OF APPLIED BIOLOGY, 1926, 13 (04) : 516 - U3

[4] CUTLER DW, 1921, PHILOS T ROY SOC B, V211, P317

[5] The protozoan fauna of the soils of New Jersey [J]. SOIL SCIENCE, 1920, 9 (01) : 1 - 25

[6] KOPELOFF N, 1916, CENTBL BAKT, V46, P28

[7] LOCHHEAD AG, 1924, T ROY SOC CAN, V18, P75

[8] Perey J. F., 1925, C R Acad Sci Paris, V180, P315

[9] Sandon H, 1927, BIOL MONOGRAPHS MANU, V7, P239

[10] Bacterial numbers in soils, at different depths, and in different seasons of the year. [J]. SOIL SCIENCE, 1916, 1 (04) : 363 - 380

[1] ALEXEIEFF A, 1924, ARCH PROTISTENKD, V50, P41

[2] Note on the protozoan fauna of the soils of the United States [J]. SOIL SCIENCE, 1924, 18 (05) : 339 - 352

[3] Influence of protozoa on the process of nitrogen fixation by Azotobacter chroococcum [J]. ANNALS OF APPLIED BIOLOGY, 1926, 13 (04) : 516 - U3

[4] CUTLER DW, 1921, PHILOS T ROY SOC B, V211, P317

[5] The protozoan fauna of the soils of New Jersey [J]. SOIL SCIENCE, 1920, 9 (01) : 1 - 25

[6] KOPELOFF N, 1916, CENTBL BAKT, V46, P28

[7] LOCHHEAD AG, 1924, T ROY SOC CAN, V18, P75

[8] Perey J. F., 1925, C R Acad Sci Paris, V180, P315

[9] Sandon H, 1927, BIOL MONOGRAPHS MANU, V7, P239

[10] Bacterial numbers in soils, at different depths, and in different seasons of the year. [J]. SOIL SCIENCE, 1916, 1 (04) : 363 - 380