00512nam a2200181Ia 4500082001700000100002000017245004700037260003400084300001400118490003900132500000500171690000600176700000500182952009900187964001700286921001000303999001700313  a516bB635.CM  aBlair, David E.  aContact manifolds in Riemannian geometryb  aBerlinbSpringer-Verlagc1976  avi, 146p.  aLecture notes on Mathematicsv 509  a  a   a  00104070aISIbISId1998-09-18l0o516 B635.CMpDP11638r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a11894  c11894d11894