000 00245nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a697.1
_bHEA
100 _aHeap, R D
245 0 _aHeat pumps
260 _aLondon
_bE & F N
_c1979
942 _cBK
999 _c38863
_d38863