String Theory and M-Theory: A Modern Introduction,String Theory and M-Theory: A Modern Introduction: Becker, Katrin, Becker, Melanie, Schwarz, John H.: 9780521860697: Amazon.com: Books,Amazon.com: Introduction to Superstrings and M-Theory (Graduate Texts in Contemporary Physics): 9780387985893: Kaku, Michio: Books,Superstring Theory: Volume 1, Introduction (Cambridge Monographs on Mathematical Physics),String Theory and M-Theory: A Modern Introduction , Becker, Katrin, Becker, Melanie, Schwarz, John H. - Amazon.com,