@book{19118,
	author = {Boucot, A. J.},
	title = {Evolution and extinction rate controls /},
	publisher = {Elsevier Scientific Pub. Co.,},
	year = {1975.},
	series = {Developments in palaeontology and stratigraphy ;},
	address = {Amsterdam ;},
	note = {"IUGS, IGCP, Unesco project: Ecostratigraphy."}
}