@book{52663,
	author = {Lummer, O. and Pringsheim, E.},
	title = {A determination of the ratio (k) of the specific heats at constant pressure and at constant volume for air, oxygen, carbon-dioxide, and hydrogen.},
	publisher = {Smithsonian Institution,},
	year = {1898.},
	series = {Smithsonian Institution publication 1126.},
	address = {Washington,},
	note = {At head of title: Hodgkins Fund.}
}