.245
a	Coal resources available for development-a methodology and pilot study
h	Buku-Bacaan Pengaya Nonfiksi
.100
a	EGGLESTON, Jane R.
.005
a	00000000000000
.260
a	Washington, D.C.
b	U.S. Government Printing Office
c	1990
.041
a	Inggris
.084
a	GS EGG
.300
a	iv, 15 halaman : gambar
b	28 cm.
c	iv, 15 halaman : gambar ; 28 cm.
.490
a	U.S. Geological Survey circular; 1055
.336
a	Buku-Bacaan Pengaya Nonfiksi