@book {Grabau1909,
	title = {North American Index Fossils},
	volume = {1},
	year = {1909},
	pages = {853},
	publisher = {A. G. Seiler {\&} Company},
	organization = {A. G. Seiler {\&} Company},
	address = {New York},
	keywords = {RCBS, TIP},
	url = {http://books.google.com/books?id=zroRAAAAIAAJ},
	author = {Grabau, Amadeus W and Shimer, Hervey Woodburn}
}
