John Ashton.  1993.  "Radiation Hazards in Museum Aircraft" in SAVING
     THE TWENTIETH CENTURY: THE CONSERVATION OF MODERN MATERIALS.
     Procedings of a Conference: Symposium '91 - Saving the Twentieth
     Century, Ottawa, Canada, 15-20 September 1991.  Ottawa: Canadian
     Conservation Institute.  pp. 287-294.  (Available from the Extension
     Services, Canadian Conservation Institute, 1030 Innes Road, Ottawa,
     Ontario, K1A 0M8, tel: 613-998-3721, fax: 613-998-4721)
 
     R. Scott Williams, Conservation Scientist, Conservation Processes
     Research, Canadian Conservation Institute, Ottawa, Ontario K1A 0M8