Background research is an important step for getting started with researching any topic, as well as to help make sense of the information you find throughout the research process. These types of sources can provide a brief summary of a topic, explain important theories, define commonly used terms, and provide biographical information on important people in the field.
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While there is no one book that can tell you everything about this discipline, these books can help introduce you to the field of NCRP.
The Handbook of Conflict Resolution by 
Conflict Resolution and Human Need by 
