@book{71821,
	author = {Walden, J. H.},
	title = {Soil Culture :},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-01-15},
	url = {https://www.gutenberg.org/ebooks/30975}
}