00303nam a2200121Ia 4500082001700000100002000017245004700037260003400084300001400118490003900132500000500171700000500176  a516bB635.CM  aBlair, David E.  aContact manifolds in Riemannian geometryb  aBerlinbSpringer-Verlagc1976  avi, 146p.  aLecture notes on Mathematicsv 509  a  a