000 00316nam a2200109Ia 4500
008 230817s9999 xx 000 0 und d
100 _aJoseph Polchinski
245 0 _aWhat is String Theory
650 _aScience
856 _uhttps://new.zodml.org/sites/default/files/2023-08/what_is_string_theory.pdf
942 _cEBK
999 _c40396
_d40396