The National Archives’ collection of over 11 million historical government and public records is one of the largest in the world. From Domesday Book to modern government papers and digital files, its collection includes paper and parchment, electronic records and websites, photographs, posters, maps, drawings and paintings.
The science behind bipolar ionization
The quality of air inside a building is a major determining factor impacting on the health and wellbeing of its occupants. Indeed, indoor air quality