000			002970000a22001330004500
245			_aSteam generation
100			_aWilliams, J.N.
250			_a4th rev. ed.
260			_aLondon _bAllen & Unwin _c1969
300			_a814p. : ill.
080			_a621.18 _bW5
041			_aEN
942			_cBK _01
999			_c102663 _d102663