00296    a2200097   4500020001500000082001300015245007900028260004000107300001700147650003400164  a0335163270  a551bOPE  aInto the earth earthquakes seismology and the earth's magnetismbunits 5-6  aWaltonbOpen universityc1995g1995  a106p.c30cm.  aGEOLOGY HYDROLOGY METEOROLOGY