EDITORIAL NOTE (editors)		1
GUEST EDITORIAL
	The Conversion of Solar Energy and the Photochemist
	(by J. Nasielski and E. Vander Donckt)	2
CALL FOR BETTER INFORMATION ON UPCOMING SCIENTIFIC MEETINGS
	(by S.G. Boué and H.J. Kuhn)	7
PERSONALIA
	Professor Egbert Havinga, 70
	(by Jan Cornelisse)	8
	Charles Dufraisse, 1885-1969
	(by J. Rigaudy)	10
OBITUARY
	In memoriam John Betteley Birks
	(By U. Mazzucato)	15
NEWS
	News from the European Photochemistry Association	18
	News from the Inter-American Photochemical Society	19
CONTACTS
	International Solar Energy Society	21
CONFERENCE REPORTS
	Workshop on Singlet Oxygen Chemistry, Fort Worth, Nov. 1978
	(by G.W. Griffin and D.C. Lankin)	23
	Kinetics of State Selected Species, Birmingham, April 1979
	(by J.P. Simons)	26
PUBLICATIONS
	Photochemical Reviews 1978-1979	27
	Most Cited Papers	38
	Photochemical Book Reviews 1978-1979	40
	Theses in Photochemistry 1977-1979	46
	New Books on Photochemistry and Related Subjects	49
ABSTRACTS		51
NEW INSTRUMENTS		54
RESEARCH NEWS		56
UPCOMING MEETINGS
	Announcements	57
	Calendar	68
EMPLOYMENT
	Fellowships Available	93
NEW MEMBERS		99
INSTRUCTIONS FOR CONTRIBUTORS		Inside back cover