on the ethics of concealment and revelation Bok, Sissela. creator text nyu New York Vintage Books c1989 monographic eng xviii, 332 p. 21 cm. Sissela Bok. Originally published: New York : Pantheon Books, 1983, c1982. Includes bibliographical references and indexes. Secrecy Moral and ethical aspects 0679724737 (pbk.) VIA 990416 20160527200526.0 220697