TY - JOUR AU - Lugg, Andrew IS - 3 JA - Philosophy of Science PB - University of Chicago Press PY - 1988 TI - G. P. Baker and P. M. S. Hacker, Wittgenstein: Rules, Grammar and Necessity. Oxford: Basil Blackwell (1985), xvi + 352 pp. $49.95 (cloth) VL - 55 ER -