000 00372nam a22001457a 4500
999 _c1801
_d1801
008 200204b ||||| |||| 00| 0 eng d
082 0 0 _a621.197
_bN873
100 _91415
_aNorthcroft, L. G.
245 1 0 _aSteam trapping and air venting
_cby L G Northcroft
250 _a3rd
260 _aLondon
_bHutchinson
_c1952
300 _a172p.
650 0 _aSteam Traps
942 _cBK