000 00256nam a2200085Ia 4500
008 180131b1981 xxu||||| |||| 00| 0 eng d
080 _a
_b621.315/.311.4(082.2) UNI.81
100 _aUniversity Of Texas
245 _aEvolution Of Sf6 Technology And Apparatus
260 _a
_bUniv.of Texas
_c1981
999 _c49629
_d49629