@book{24158,
	author = {Maryland Geological Survey and Maryland.},
	title = {Maryland and its natural resources,},
	year = {1901.},
	address = {Baltimore,},
	note = {At head of title: Official publication of the Maryland commissioners Pan-American exposition.},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.00143137077}
}