@book{41725,
	author = {Ehrlich, Paul R.},
	title = {How to know the butterflies},
	publisher = {W. C. Brown Co.},
	year = {[1961]},
	series = {The Pictured key nature series},
	address = {Dubuque, Iowa},
	edition = {1st ed.},
	note = {920403}
}