Administration and supervision of village schools. W. S. Deffenbaugh and J. C. Muerman. (U.S. Education bureau. Bul. 1919, no. 86) 63p pa ’20
Rural school playgrounds and equipment. K. Cecil Richmond. (U.S. Education bur. Teacher’s leaflet 11) 12p pa ’20
Schools in the bituminous coal regions of the Appalachian mountains. W. S. Deffenbaugh. (U.S. Education bur. Bul. 1920, no. 21) 31p pa ’20
Statistics of public high schools. 1917–18. H. R. Bonner. (U.S. Education bur. Bul. 1920, no. 19) 192p pa ’20
Advance sheets from the Biennial survey of Education in the United States, 1916–18
Seeds
New Missouri seed law. Jewell Mayes. (Missouri. State board of agriculture. Monthly bulletin, v 17, no. 11) 35p pa ’19 Jefferson City, Mo.
The New York seed law and seed testing. M. T. Munn. (New York. Agricultural experiment station. Bul. 476) 15p pa ’20 Geneva, N.Y.
Sewage disposal
Municipal wastes: their character—collection—disposal. H. R. Crohurst. (U. S. Public health service. Public health bul. 107) 98p pa ’20