000			00508nam a2200169Ia 4500
008			130910s9999 xx 000 0 und d
041			_aeng
082			_221st ed. _a621.197 _bNOR/S, 2
100			_aNorthcroft, L.G.
245			_aSteam trapping and air venting _cby L.G. Northcroft
250			_a2nd rev. and rep. ed.
260			_aLondon : _bHutchinson’s Scientific and Technical Publications , _c1947
300			_a169p.: ill ; _c22cm
504			_aIndex: pp 170-2
653			_aSteam-traps
942			_cEN _2ddc
999			_c29678 _d29678