The Encyclopaedia of ignorance / edited by Ronald Duncan and Miranda Weston-Smith. Duncan, Ronald, 1914-1982. Weston-Smith, Miranda. Science. Q158.5 .E53 1977 500 EHC Includes bibliographical references and index. Oxford [Eng.] ; New York : Pergamon Press, 1977. 1977. 1977 Text 2 v. : eng