HACKER, P.M.S. (& G.P. BAKER). An analytical commentary on the Philosophical Investigations. (1980-96). 4 vols. Ocl. dust-j. -- E. HUSSERL. Ideen zu einer reinen Phänomenologie und phänomenologischen Philosophie. 1976. 2 vols. Ocl. w. dust.-j. -- And 10 o., mostly on/by Wittgenstein. (16).