CHAP 1 THE SPECTRUM OF ELECTROMAGNETIC RADIATION:UV-A IN PERSPECTIVE. CHAP 2 SOURCES OF UV-A. CHAP 3 RADIOMETRY OF ULTRAVIOLET RADIATION. CHAP 4 OPTICAL PROPERTIES OF THE SKIN AND EYES. CHAP 5 EFFECTS OF ULTRAVIOLET RADIATION ON MICROORGANISMS AND ANIMAL CELLS. CHAP 6 IMMEDIATE AND SHORT-TERM BIOLOGICAL EFFECTS OFULTRAVIOLET RADIATION ON NORMAL SKIN. CHAP 7 ADVERSE CUTANEOUS REACTIONS TO UV-A. CHAP 8 SKIN AGING AND CARCINOGENESIS DUE TO ULTRAVIOLET RADIATION. CHAP 9 EFFECTS OF ULTRAVIOLET RADIATION ON THE EYE. CHAP 10 USES OF UV-A INVOLVING EXPOSURE OF HUMANS. CHAP 11 SAFETY MEASURES AND PROTECTION AGAINST ULTRAVIOLET EXPOSURE.