raking light studies, 1994 - 1994ultraviolet light studies, 1994 - 1994stereomicroscopy, 1993 - 1994infrared photography, 1994 - 1994light microscopy, 1994-07 - 1994-11not specified, 1993 - 1994x-radiography, 1994 - 1994normal light studies, 1993 - 1994stereomicroscopy, 1993 - 1994stereomicroscopy, 1993 - 1994