000			00279nam a2200109Ia 4500
008			230413s9999||||xx |||||||||||||| ||und||
020			_a978 0387903323
082			_a51YA
100			_aYaglom, I. M.
245		2	_aA simple non-Euclidean geometry and its physical basis
942			_cBooks
999			_c374 _d374