000			00313 a2200133 4500
080			_a621 _bM 486
245	1		_aInfra-Red heating _cby A.E. Williams
260			_aLondon _c1947
650			_aMechanical Engineering
650			_aInfra-Ref Heating
100	1		_aWilliams, A.E. _d
300			_a42 p.
901			_a64949
999			_c39671 _d39671