00290nam a2200121Ia 4500008004100000082001500041100001900056245002400075260003500099300001000134942000700144999001700151190709s9999 xx 000 0 und d a515.57 N49 aVeblen, Oswald 0aProjective geometry aBostonbGinn and companyc1938 ax,345 cBK c40871d40871