Positive language and positive law in Plato's Cratylus
Law's positivity in the natural law jurisprudence of Thomas Aquinas
Positive language and positive law in Thomas Hobbes
Positive law in the analytical positivism of John Austin.
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The philosophy of positive law : foundations of jurisprudence by James Bernard Murphy. ISBN 0300107889. Published by Yale University Press in 2005. Publication and catalogue information, links to buy online and reader comments.
