Asbestos Identification Kit from the Occupational Health Department of the London School of Hygiene and Tropical Medicine
McCrone Particle Reference Set, consisting of a small case of 100 indexed glass microscope slides of examples of both organic and non-organic particles, from the Occupational Health Department of the London School of Hygiene and Tropical Medicine, by McCrone Research Associates Ltd, London, England, 1960-1980 McCrone Particle Reference Set
