Thirlway, Hugh, author
The sources of international law
Oxford University Press, 2014
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Lupis, Ingrid Detter de, author
The concept of international law
Norsteds Forlag, 1987
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Schwarzenberger, Georg, author
A manual of international law
Stevens & Sons, 1967
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Schwarzenberger, Georg, author
The inductive approach to international law
Stevens & Sons, 1965
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Wortley, B.A., author
Expropriation in public international law
University Press, 1959
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