000			002860000a22001210004500
245			_aEstimating for heating & ventilating
100			_aBarton, J.J.
260			_aLondon _bGeorge Newnes _c1962
300			_a216p. : ill., tables
080			_a697 _bB3
041			_aEN
942			_cBK
999			_c96561 _d96561