Airborne metals and microorganisms during work with historical books – Exposure and biomonitoring - Akila Muthalagu; Mohammad S. Delsuz; Michael Levi; Maria Kippler; Margit W. Frederiksen; Birgit Vinther Hansen; Iben Bak Christensen; Karin Broberg; Anne Mette Madsen (International Journal of Hygiene and Environmental Health, 2025)