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␈↓ ↓H␈↓␈↓βS␈↓∧ Artificial Intelligence Laboratory, STANFORD UNIVERSITY, Stanford, California 94305

␈↓ ↓H␈↓∧Telephone 415 497-4430␈↓ 
-July 7, 1977 




␈↓ ↓H␈↓Mr. Patrick J. Quigley
␈↓ ↓H␈↓Senior Editor
␈↓ ↓H␈↓Mathematical and Physical Sciences
␈↓ ↓H␈↓MacMillan Educational Corporation
␈↓ ↓H␈↓866 Third Avenue
␈↓ ↓H␈↓New York, N.Y. 10022

␈↓ ↓H␈↓Dear Mr. Quigley:

␈↓ ↓H␈↓I have started on the article you requested and can ≡nish it without di≠culty by August 15.


␈↓ ↓H␈↓Sincerely,



␈↓ ↓H␈↓John McCarthy
␈↓ ↓H␈↓Director
␈↓ ↓H␈↓Professor of Computer Science