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Created in 1863, the ICRC library, alongside the ICRC archives, provides an indispensable documentary reference on the organization itself and international humanitarian law.
International humanitarian law is based on a number of treaties, in particular the Geneva Conventions of 1949 and their Additional Protocols, and a series of other instruments.
Customary international humanitarian law consists of rules that come from "a general practice accepted as law" and that exist independent of treaty law.