000
00263 a2200109 4500
082
_a
333.79
_b
ENE
245
_a
Energy year book 1986
260
_a
Islamabad:
_b
Ministry of petrolum and natural resources,
_c
1986.
300
_b
.
_a
155p
546
_a
eng
942
_c
BK
999
_c
23938
_d
23938