00401nam a2200133 a 450000500170000002000150001708200160003210000190004824500500006726000440011730000260016149000620018763000180024920251203090450.0  a0521239338  a551.22bKEN  aKennett, B.L.N  aSeismic wave propagation in stratifield media  aDelhibCambridge University Pressc1983  aviii,341 p.b22cm. HB  aCambridge monographs on mechanics and applied mathematics  aSeismic waves