00730cam a22002051 4500 e 31000716 DLC 20260227111221.0 810810s1931 dcu 000 0 eng e 31000716 (OCoLC)29093887 DLC MnU OCoLC DLC L111 .A73 no. 9 Greenleaf, Walter James, 1889- Careers. Librarianship ... Washington, D.C., U.S. Govt. print. off., 1931. ii, 9 p. 23 cm. With: Sanitation of schools / James Frederick Rogers. Washington : U. S. Govt. Print. Off., 1930. Bound together subsequent to publication. DLC Library science Vocational guidance United States. 21130 21130