@book{34231,
	author = {Brown, Kenneth E., and Obourn, Ellsworth S.},
	title = {Qualifications and teaching loads of mathematics and science teachers in Maryland, New Jersey, and Virginia /},
	publisher = {U.S. Dept. of Health, Education, and Welfare, Office of Education,},
	year = {[1959]},
	address = {[Washington] :},
	note = {Information obtained in cooperation with the National Science Foundation.}
}