@book{25090,
	author = {Clarke, Frank Wigglesworth,},
	title = {The data of geochemistry /},
	publisher = {Govt. Print. Off.,},
	year = {1911.},
	series = {U.S. Geological survey. Bulletin 491},
	address = {Washinton,},
	edition = {2d edition.},
	note = {"The first edition of this volume was published in 1908 as Bulletin 330 of the United States Geological survey. The work has been revised and enlarged for the present edition." - Foot-note, p. 9}
}