Book Review: The Lex Mercatoria in Theory and Practice, by Orsolya Toth. (New York: Oxford University Press. 2017) - Journal of International Arbitration View Book Review: The Lex Mercatoria in Theory and Practice, by Orsolya Toth. (New York: Oxford University Press. 2017) by - Journal of International Arbitration Book Review: The Lex Mercatoria in Theory and Practice, by Orsolya Toth. (New York: Oxford University Press. 2017) 34 6 Journal of International Arbitration