This article is about a region of land that is not claimed by any party. For a region separating warring parties, see No man's land. For the book, see Terra Nullius (Coleman novel).
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Brownlie, I. (1990). Principles of Public International Law (4th ed.). p. 146.
• Hall, W.E. (1923). A Treatise on International Law. pp. 102–103.
• Hyde, C. (1945). International Law (revised 2nd ed.). p. 329.
• Moore, J. (1906). International Law. p. 258.
• Oppenheim, L. (1937). International Law (5th ed.). H. Lauterpacht. §§222-223, pp. 439–441.
• Phillimore, R. (1871). International Law (2nd ed.). p. 273.
• Vattel, E. (1844). Law of Nations (6th Am. ed.). J. Chitty. §208, p. 99.
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