000			00323nam a2200133Ia 4500
001			19831
008			170722s9999 xx 000 0 und d
100			_aBergmann, Peter Gabriel
245			_aIntroduction to the theory of relativity, eng /
260			_c1969.
653			_aPhysics
653			_aRelativity
942			_cGEN
999			_c73945 _d73945