Nilsson, Nils J. Principles of artificial intelligence / Nils J. Nilsson - New Delhi : Narosa, c1980. - xv, 476 p. : ill. ; 24 cm. Includes bibliographies and index. ISBN: 8185198292 Subjects--Topical Terms: Artificial intelligence LC Class. No.: Q335 / .N55 1980 Dewey Class. No.: 006.3 / N695p