ISBN 9789971505233 books & textbook
Strings and Superstrings: El Escorial, Spain Une 1-6, 1987 (18th International Gift Seminar on Theoretical Physics)
Mittelbrunn, Juan R. Ramon-Medrano, M. Rodero, G. S.
World Scientific Pub Co Inc /1988-06-01 Hardcover / 300 Pages
isbn-10: 9971505231 / isbn-13: 9789971505233
