(1990). Specification for direct gas-fired forced convection air heaters with rated heat inputs up to 2 MW for industrial and commercial space heating: Safety and performance requirements (excluding electrical requirement) (2nd family gases). London: BSI.
Chicago Style CitationSpecification for Direct Gas-fired Forced Convection Air Heaters With Rated Heat Inputs Up to 2 MW for Industrial and Commercial Space Heating: Safety and Performance Requirements (excluding Electrical Requirement) (2nd Family Gases). London: BSI, 1990.
MLA CitationSpecification for Direct Gas-fired Forced Convection Air Heaters With Rated Heat Inputs Up to 2 MW for Industrial and Commercial Space Heating: Safety and Performance Requirements (excluding Electrical Requirement) (2nd Family Gases). London: BSI, 1990.