Preface. Glossary of Terms. Introduction. Computation of Age-dependent Effective Dose Coefficients. Biokinetic Data and Ingestion Dose Coefficients. Sulphur. Cobalt. Nickel. Zinc. Strontium. Molybdenum. Technetium. Silver. Tellurium. Barium. Lead. Polonium. Radium. Appendix A: Age-specific Biokinetic Models for the Alkaline Earth Elements and Lead. Appendix B: Age-specific Biokinetic Models for Plutonium, Americium, and Neptunium. Appendix C: Age-specific Biokinetic Data and Dose Coefficients for Radioisotopes of Hydrogen, Carbon, Zirconium, Niobium, Ruthenium, Iodine, Caesium, Cerium, Plutonium, Americium, and Neptunium.