000			00523nam a2200181Ia 4500
999			_c72880 _d72880
005			20220817133622.0
008			180710s9999 xx 000 0 und d
041			_aEN
082			_a516.9 _bBON _223
100			_aBONOLA, Roberto
245			_aNon-Euclidean geometry: _ba critical and historical study of its developments / _cby Roberto Bonola
260			_aLondon _bConstable _c1955
300			_axii, 50 p.y
500			_aIncludes appendix & bibliogrphy.
509			_aNS
650			_aEuclidean geometry
942			_cS