00646nam0-22002411i-450-990001238270403321000123827FED01000123827(Aleph)000123827FED0100012382720000920d--------km-y0itay50------baeng<<The >>non-euclidean revolutionby TRUDEAU R.J.Boston [etc.]BirkhauserTrudeau,Richard J.41089ITUNINARICAUNIMARCBK990001238270403321114-E-233789MA1MA1Non-Euclidean revolution29570UNINAING01