TY - GEN AU - Penrose, Roger TI - Collected works SN - 9780199219445 PY - 2011/// CY - Oxford PB - Oxford university press KW - Mathematics - collected works KW - Physics - collected works KW - Philosophy - collected works N1 - 6v.-v.1, 1953-1967.-v.2, 1968-1975.-v.3, 1976-1980.-v.4, 1981-1989.-v.5, 1990-1996.-v.6, 1997-2003 ER -