Ujhelyi, ZoltánTo, Thinh2019-04-292019-04-292019-02-28http://hdl.handle.net/2437/266385project divine wind describes briefly the environmental cause of allergy plus its consequences. introduction of nasal filter, what it capable, ideas, concepts. what are available on market plus reviews. design of xnfs, enfs and cores. results of prototypings.36ennasal filterDEENK Témalista::Környezettudományok