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The Max Planck Encyclopedias of International Law is a comprehensive online resource containing peer-reviewed articles on every aspect of public international law. Comprises the Max Planck Encyclopedia of Public International Law, as well as the newly-launched Max Planck Encyclopedia of International Procedural Law. The two Encyclopedias can be searched and browsed together, or separately by using appropriate filters. Written and edited by an incomparable team of over 800 scholars and practitioners, published in partnership with the Max Planck Institute for Comparative Public Law and International Law, and updated through-out the year, this major reference work is essential for anyone researching or teaching international law.