http://book.klll.cc/ebooks/subject/38025.opds 2025-09-23T10:52:44Z Books about Soil microbiology (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-09-23T10:52:44Z https://book.klll.cc/ebooks/68670.opds The micro-organisms of the soil Edward J. Russell and Rothamsted Experimental Station