Hacker, P. M. S. Wittgenstein: rules, grammar and necessity: essays and exegesis of 185-242/ Hacker, P. M. S. - Second edition - Malden: Wiley-Blackwell 2009 - An analytical commentary on philosophical investigations series, v. 2 . 13960 Wittgenstein, Ludwig, 1889 - 1951. Philosophische Untersuchngen ISBN: 978-1-4051-8408-3 Subjects--Topical Terms: Philosophy|Language and languages -- Philosophy|Semantics (Philosophy)Wittgenstein, Ludwig, 1889 - 1951. Philosophische Untersuchngen Dewey Class. No.: 192/HAC/W