00641cam a2200229 4500 357759392 TxAuBib 930309s1993||||||||||||||||||||||||eng|u 93015148 9780385263429 0385263422 (OCoLC)27812438 PWmBRO TxAuBib Asimov, Isaac, 1920- The positronic man / by Isaac Asimov and Robert Silverberg. 1st ed. New York : Doubleday, 1993. p. cm. "A Foundation book.". Silverberg, Robert. QS7