@book{ BB19888106, author = "Lathrop, Edith A. and United States. Bureau of Education", title = "County library service to rural schools", publisher = "G.P.O.", year = "1930", series = "Bulletin / Department of the Interior, Bureau of Education", number = "1930, no. 20", URL = "https://ci.nii.ac.jp/ncid/BB19888106" }