@book{21130,
	author = {Conard, Henry Shoemaker},
	title = {How to know the mosses and liverworts},
	publisher = {W. C. Brown Co.},
	year = {[1972, c1956.},
	series = {Pictured key nature series},
	address = {Dubuque, Iowa},
	edition = {Rev. ed.},
	note = {Previously published under title: How to know the mosses.}
}