normal light studies, 1984-09-03 - 1984-09-03ultraviolet light studies, 1984 - 1985normal light studies, 1984 - 1985raking light studies, 1984 - 1985infrared photography, 1984 - 198550109505010951501095250109535010954501095550109575010958501095950109605010961501096250109635010964501096550109665010967501096850109695010970ultraviolet light studies, 1984 - 1985normal light studies, 1984 - 1985normal light studies, 1984 - 1985raking light studies, 1984 - 1985