Harper's citizens series

＜図書＞
Harper's citizens series


1	The principles of American diplomacy / by John Bassett Moore New York ; London : Harper , 1918
2	Principles of constitutional government / by Frank J. Goodnow New York ; London : Harper , 1916
3	Principles of labor legislation / by John R. Commons and John B. Andrews [Rev. ed.]. - New York : Harper , c1920