01059nam0-22002891i-450-990001115940403321981-02-0774-3000111594FED01000111594(Aleph)000111594FED0100011159420000920d1992----km-y0itay50------baengString Theory and Quantum Gravity '91Proceedings of the Trieste Spring School & Workshop ICTP Trieste, Italy April 15-26, 1991edited by J. Harvey ... [et al.]Singapore [etc.]World Scientific1992In testa al front.: International Centre for Theoretical Physics - International Atomic Energy Agency - United Nations Educational, Scientific and Cultural Organization.Scuole di fisica530.143Harvey,Jack245983ITUNINARICAUNIMARCBK99000111594040332122B-022.03119206FI1FI1String Theory and Quantum Gravity '91337358UNINAING01