00971nam0-22003011i-450-99000098990040332190-277-1156-9000098990FED01000098990(Aleph)000098990FED0100009899020000920d1980----km-y0itay50------baengX-Ray AstronomyProceedings of the NATO Advanced Study Institute held at Erice, Sicily, July 1-14, 1979edited by Riccardo Giacconi and Giancarlo SettiDordrecht (NL)Reidel1980NATO ASI seriesSeries CMathematical and physical sciences60Scuole di fisica530.143Giacconi,Riccardo<1931- >46620Setti,Giancarlo<1935- >ITUNINARICAUNIMARCBK99000098990040332122B-016.02211655FI1FI1X-Ray Astronomy353782UNINAING01