By Lewis, Roy..
London Phoenix House 1949

Oxford [Oxfordshire] | New York Clarendon Press | Oxford University Press 1983 .
vii, 250 p. , Based in part on conferences held at Siena in Dec. 1980 and at the University of Frankfurt in Feb. 1981. 23 cm..
0198253931 (U.S.) | 0198254822 (U.S. : pbk.)