000 00294nam a2200097Ia 4500
008 171204s9999 xx 000 0 und d
245 _aSpacetime and Geometry: An Introduction to General Relativity
260 _c2014
650 _xGeometry
856 _uhttp://down.ebook777.com/046/1292026634.pdf
999 _c345519
_d345519