00327nam a2200133 a 450000500170000002000150001708200160003210000140004824500390006226000370010130000210013863000140015971000200017320251202164126.0 a0716713845 a551.21bROB aRobertd_ aVolcanoes and the earth's interior aSanfranciscobW.H. Freemanc1982 a141 p.b24cm.c_ aVolconoes aDecker, Barbara