@book{24701,
	author = {Randall, Dwight T.},
	title = {The purchase of coal under government and commercial specifications on the basis of its heating value, with analyses of coal delivered under government contracts /},
	publisher = {Govt. Print. Off.,},
	year = {1908.},
	series = {U.S. Geological Survey. Bulletin},
	address = {Washington :},
	note = {Subject series: Q, Fuels, 10.}
}