O. N. Allen has written:

'Experiments in soil bacteriology' -- subject(s): Laboratory manuals, Microbiology, Soil microbiology

Type your answer here..

Joseph C. Gilman has written:

'A manual of soil fungi' -- subject(s): Soil microbiology

They study the biology of tiny organisms, such as protists bacteria and other single celled organism's Micro = small, biologist = someone who studies biology.

'Scientists who study the structure and the function of cells'

David Michael Griffin has written:

'Ecology of soil fungi' -- subject(s): Ecology, Microbial ecology, Soil fungi, Soil microbiology