Regulation of Porphyrin and Heme Biosynthesis : parts I and II, proceedings of the International Research Conference on Regulation of Porhyrin and Heme Biosynthesis (18th Conference of the 'Deutsche Gesellschaft für Biologische Chemie'), Marburg a. d. Lahn, June 28 - July 1 1973 - Doss, Manfred (Basel Paris München : S. Karger, 1974)