@book{ BA88645922, author = "Association of American Agricultural Colleges. Committee on Instruction in Agriculture and United States. Office of Experiment Stations and United States. Dept. of Agriculture", title = "Report of the Committee on Instruction in Agriculture, 1911", publisher = "[G.P.O.]", year = "1912", series = "Circular / United States Department of Agriculture", number = "115", URL = "https://ci.nii.ac.jp/ncid/BA88645922" }