00284nam a2200097Ia 4500020001800000082001900018100001800037245009800055260002400153300000900177  a9780099289920  a539.7258 GRE/E  aGreene, Brian 4aThe Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory   bVintage Booksc2000  a448p