Special Issue in Commemoration of the 70th Birthday of Dr. David R. Bickers.
D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D018462:Photobiology / Q000266:history*; D010777:Photochemistry / Q000266:history*; D012867:Skin / Q000528:radiation effects; D014481:United States