TY - BOOK AU - Polchinski,Joseph TI - String theory SN - 0521633036 (v. 1 : hardback) PY - 1998/// CY - Cambridge, United Kingdom PB - Cambridge University KW - String models KW - Superstring theories N1 - Includes bibliographical references and index; vol. 1; An introduction to the bosonic string -; vol. 2; Superstring theory and beyond ER -