01350cam a22002771 4500 hew60000016 DLC 20260227111510.0 860114s1959 dcu 000 0 eng hew60000016 (OCoLC)13476311 DLC RPB OCoLC DLC premarc L111 .A72 no. 575 Brown, Kenneth E., 1904- Qualifications and teaching loads of mathematics and science teachers in Maryland, New Jersey, and Virginia / by Kenneth E. Brown and Ellsworth S. Obourn. [Washington] : U.S. Dept. of Health, Education, and Welfare, Office of Education, [1959] viii, 101 p. : tables ; 26 cm. Circular (United States Office of Education) ; no. 575 Information obtained in cooperation with the National Science Foundation. With: State legislation on school attendance and related matters, school census, and child labor / Nelda Rose Umbeck. [Washington] : U.S. Dept. of Health, Education, and Welfare, Office of Education, [1959]. Bound together subsequent to publication. DLC Teachers Training of United States. Science Study and teaching. Mathematics Study and teaching. Obourn, Ellsworth S. (Ellsworth Scott), 1897- 34231 34231