Exact Matching Concepts from Other Schemes
- found: His The social stratification of English in New York City, 1966.
- found: The atlas of North American English, c2006: ECIP t.p. (William Labov) data view (b. Dec. 4, 1927; professor of linguistics at Univ. of Pennsylvania)
- 1979-09-18: new
- 2012-12-31: revised