@book{27544,
	author = {Cushman, Joseph A.},
	title = {A monograph of the foraminiferal family Nonionidae,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1939.},
	address = {Washington,},
	note = {At head of title: United States Dept. of the Interior ... Geological Survey.}
}