Reviews
- John Earman, The Philosophical Review, Vol. 80, No. 4 (Oct., 1971), pp. 516-522
- Yvon Gauthier, Dialogue: Revue Canadienne de Philosophie, Volume 10, Issue 01. March 1971, pp. 199 - 201
- Gerald J. Massey, Philosophy of Science, Vol. 41, No. 1 (Mar., 1974), pp. 90-92
- Graham Nerlich, Australasian Journal of Philosophy, Vol. 51:1 1973, pp. 82-90