00775nam a2200217Ia 4500003000900000008004100009020001800050040001600068080001500084100002900099245010600128260003800234300001500272650004100287650003300328650002000361650003500381942000700416999001500423952011900438IN-BaIIA211028s9999    xx            000 0 eng d  a0-471-08033-0  cIIA Library  a517.9bNAY  aNayfeh, Ali Hasan913317 0aIntroduction to perturbation techniquescAli Hasan Nayfeh                                              aNew YorkbJohn Wiley & Sonsc1981  axiv, 519p.  aAstronomy and Astrophysics Thesaurus  aDifferential Equations91510  aMathematics982  aPerturbation Techniques913318  cBK  c7895d7895  00104070aBANbBANcGENd1984-07-05g498.40l0o517.9/ NAYp8718r2021-11-05v498.40w1984-07-05yBKGRs. 498.40