Exact Matching Concepts from Other Schemes
- found: Preliminary analysis of the Crips and Bloods street gang activity in Oklahoma, 1991.
- found: Wikpedia, Apr. 24, 2008 (The Crips are a primarily, but not exclusively, African-American gang founded in Los Angeles, California)
- 2008-04-24: new
- 2008-06-11: revised