At head of title: International Union of Pure and Applied Chemistry, Division of Organic Chemistry.
Second title-page in French.
Simultaneously published in 'Pure and Applied Chemistry' vol.33 no.2-3 (1973)
Photochemistry 4 : plenary lectures presented at the Fourth International Symposium on Photochemistry held at Baden-Baden, Germany, 16-22 July 1972. ISBN 0408704551. Published by Butterworths in 1973. Publication and catalogue information, links to buy online and reader comments.