00236nam a2200109Ia 4500082001900000100002300019245003600042260002400078300001400102500000500116700000500121  a530.2bB813.RP  aBrahmachary, R. L.  aRiemannian physics, 1854-1955b  aCalcuttabISIc1957  aii, 146p.  a  a