000			00636nam a2200241Ia 4500
001			CATREF004382
008			110517s9999 xx 000 0 und d
041			_aeng
082			_a513
100			_aBlumenthal, Leonard M
245			_aA modern view of geometry
260			_aSan Francisco _bW H Freeman and company _c1961
300			_axii, 191 p. _c21 cm.
440			_aA series of undergraduate books in mathematics
546			_bRoman
650			_aNon-Euclidean planes
650			_aPostulational systems
650			_aPostulational systems
650			_aSets
906			_a003499
906			_atext
942			_cBook
999			_c255641 _d255577