@book{21476,
	author = {Clausen, Jens. and Keck, David D.},
	title = {Pant evolution throuh amphiploidy and autoploidy, with examples from the Maddinae},
	publisher = {Carnegie Institution,},
	year = {1945},
	series = {Experimental studies on the nature of species},
	address = {Washington :},
	note = {Publication 564}
}