@book{24627,
	author = {Lesquereux, Leo,},
	title = {Description of the coal flora of the Carboniferous formation in Pennsylvania and throughout the United States ...},
	publisher = {Board of Commissioners for the Second Geological Survey,},
	year = {1879-84.},
	series = {Pennsylvania. Geological Survey, 2d. Report of progress},
	address = {Harrisburg,},
	note = {Paged continuously.}
}