000 00269nam a2200121Ia 4500
008 160710s1984 xx 000 0 und d
082 _a621.4 TRE
100 _aELTINGTREAT,J
245 _aENRGY FUTURES
260 _bPENN WELL
_c1984
300 _a158
942 _2ddc
_cB
999 _c47143
_d47143