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| | The Encyclopedia of Computer Languages (Site not responding. Last check: 2007-10-18) |
 | | Dan Swinehart & Bob Sproull, Stanford AI Project, 1970. |
 | | Swinehart, Dan, and Sproull, Bob, (1968) Swinehart, Dan, and Sproull, Bob, "SAIL", Operating Note No. 57.1, Stanford Artificial Laboratory, Stanford University, December, 1968. |
 | | Robert Sproull joined Swinehart in incorporating the features of LEAP The first version of the language was released in November, 1969. |
| hopl.murdoch.edu.au /showlanguage.prx?exp=528 (1496 words) |
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