Keesecker, W. W., & Lathrop, E. A. (1941). Laws affecting school libraries. U. S. Govt. Print. Off.
Cita Chicago Style (17a ed.)Keesecker, Ward W., y Edith Anna Lathrop. Laws Affecting School Libraries. Washington: U. S. Govt. Print. Off, 1941.
Cita MLA (9a ed.)Keesecker, Ward W., y Edith Anna Lathrop. Laws Affecting School Libraries. U. S. Govt. Print. Off, 1941.
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