.245
a	The 1980 eruptions of mount st. helens, washington
h	Buku-Bacaan Pendukung
.005
a	20190110100847
.260
a	Washington D.C
b	Geological Survey Professional Paper
c	1981
.041
a	Inggris
.084
a	551.21 NIN
.300
a	xxvii, 844 halaman : gambar, tabel
b	29 cm.
c	xxvii, 844 halaman : gambar, tabel ; 29 cm.
.336
a	Buku-Bacaan Pendukung