The micro-organisms of the soil Russell, Edward J. Sir, (Edward John), 1872-1965 creator text book London Longmans, Green 1923 1923
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ENG Soil microbiology QR111 R87 Rothamsted monographs on agricultural science https://www.biodiversitylibrary.org/bibliography/17636 10.5962/bhl.title.17636 OTU