1.

図書
図書
1. A treatise on probability
Keynes, John Maynard, 1883-1946 ; Royal Economic Society (Great Britain)
出版情報: London : Macmillan for the Royal Economic Society, 1973
シリーズ名: The collected writings of John Maynard Keynes ; v. 8
2.

図書
図書
2. A treatise on probability
by John Maynard Keynes
出版情報: London : Macmillan, 1921