Air quality in secondary agricultural mechanical laboratories

2015-02-101994-05http://hdl.handle.net/2346/61007application/pdfengWelding -- Study and teaching (Secondary) -- Texas -- Lubbock Region -- Safety measuresAgricultural mechanics -- Study and teaching (Secondary) -- Texas -- Lubbock Region -- Safety measuresSchool buildings -- Texas -- Lubbock Region -- Heating and ventilationWelding -- Health aspectsAir quality in secondary agricultural mechanical laboratoriesThesisUnrestricted.