TY - BOOK AU - Pagels, Heinz R TI - Perfect symmetry : the search for the beginning of time SN - 9781439148884 SN - 84029825 U1 - 523.1 PAG PY - 1985/// CY - New York PB - Simon and Schuster KW - Astrophysics KW - Cosmology KW - Field theory (Physics) KW - Space and time N1 - Includes index. Bibliography: p. [373]-377 ER -