01020nam0-22003131i-450-9900011122904033213-540-56180-3000111229FED01000111229(Aleph)000111229FED0100011122920000920d1992----km-y0itay50------baengRelativistic Gravity ResearchWith emphasis on experiments and observationsProceedings of the 81 WE-Heraeus-Seminar held at the Physikzentrum, Bad Honnef, Germany 2-6 September 1991Edited by Jurgen Ehlers, Gerhard SchaferBerlin [etc.]Springer-Verlag1992Lecture notes in physics410RelativitàGravità530.11Ehlers,Jurgen40370Schafer,GerhardITUNINARICAUNIMARCBK99000111229040332123-22218763FI1FI1Relativistic Gravity Research337196UNINAING01