@book{97303,
	author = {Hopkins, Cyril G.},
	title = {Nitrogen Bacteria and Legumes :},
	publisher = {Project Gutenberg,},
	year = {2018},
	series = {University of Illinois Agricultural Experiment Station Bulletin No. 94},
	address = {Salt Lake City, UT :},
	note = {Release date is 2018-01-31},
	url = {https://www.gutenberg.org/ebooks/56472}
}