000 00260nam a2200121Ia 4500
008 211209s1975 xx 000 0 und d
041 _aeng
082 _a621.4 N75 SHV
100 _aSHVETS I T
245 _aHEAT ENGINEERING
260 _c1975
300 _a580
999 _c15174
_d15174