@book{109384,
	author = {Warming, Eugenius, and Knoblauch, Emil,},
	title = {A handbook of systematic botany},
	publisher = {Project Gutenberg,},
	year = {2022},
	address = {Salt Lake City, UT :},
	note = {Release date is 2022-07-21},
	url = {https://archive.org/details/handbookofsystem00warmuoft}
}