@book{245365,
	author = {Hedberg, Olov},
	title = {Systematics of to-day : proceedings of a symposium held at the University of Uppsala in commemoration of the 250th. anniversary of the birth of Carolus Linnaeus},
	publisher = {Lundequistska Bokhandeln},
	year = {1958},
	address = {Uppsala},
	note = {Donación Dr. Federico B. Vervoorst}
}