Book Reviews : Geoffrey Hawthorn,Plausible Worlds: Possibility and Understanding in History and the Social Sciences. Cambridge University Press,Cambridge,1991. Pp. 206. $44.50 (cloth). G. R. Elton,Return to Essentials: Some Reflections on the Present State of Historical Study. Cambridge University Press,Cambridge,1991. Pp. 136. $29.95 (cloth

Hawthorn, Geoffrey. 1987. Enlightenment and despair: A history of social theory . Cambridge : Cambridge University Press.

McCullagh, C. Behan. 1984. Justifying historical descriptions. Cambridge: Cambridge University Press.

Moore, Barrington, Jr. 1977. Social origins of dictatorship and democracy . London: Penguin.

Nozick, Robert. 1981. Philosophical explanations. Oxford : Clarendon.