000 00298nam a2200121Ia 4500
008 170324s9999 xx 000 0 und d
082 _a621.56
100 _a"Langley, Billy C."
245 0 _aElectric controls for refrigeration and air condtioning
260 _c1900
365 _b0.00
942 _cBK
999 _c4612
_d4612