00370nam a2200133 a 450000500170000002000150001708200150003210000230004724500410007026000360011130000250014749000390017270000250021120251203110155.0  a038794947X  a532.5bARN  aArnold, Vladimir I  aTopological methods in hydrodynamics  aNew YorkbSpringer-Verlagc1998  axv,374p.c23 cm H.B.  aApplied mathematical sciencesd125  aand Khesin, Boris A.