Biologic effects of light 1998 : proceedings of a symposium, Basel, Switzerland, November 1-3, 1998 - Boston: Kluwer Academic, 1999 - xv, 491 p. : ill. ; 25 cm ISBN: 9780792385509 Subjects--Topical Terms: Light - Physiological effect - Congresses Dewey Class. No.: 6101444 HOL