The density of unicellular organisms

[1] A critical enquiry into the alleged fixation of nitrogen by green algae [J]. ANNALS OF APPLIED BIOLOGY, 1923, 10 (3-4) : 378 - U17

[2] Observations on soil protozoa [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1919, 9 : 430 - 444

[3] EVERETT JD, 1900, BRIT ASS REP, P648

[4] KAYE GWC, PHYS CHEM CONSTANTS, P153

[5] LEPESCHKIN WW, 1923, BER DEUT BOT GESELB, V41, P179

[6] WILEY HW, 1914, AGR PRODUCTS, V3, P846

[1] A critical enquiry into the alleged fixation of nitrogen by green algae [J]. ANNALS OF APPLIED BIOLOGY, 1923, 10 (3-4) : 378 - U17

[2] Observations on soil protozoa [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1919, 9 : 430 - 444

[3] EVERETT JD, 1900, BRIT ASS REP, P648

[4] KAYE GWC, PHYS CHEM CONSTANTS, P153

[5] LEPESCHKIN WW, 1923, BER DEUT BOT GESELB, V41, P179

[6] WILEY HW, 1914, AGR PRODUCTS, V3, P846