TY - BOOK ED - International Commission on Radiological Protection TI - Protection against ionizing radiation from external sources: a report by Committee 3 of the International Commission on Radiological Protection PY - 1970///0080163912 CY - Oxford PB - Pergamon Press KW - Ionizing radiation KW - Measurement KW - Safety measures KW - Radiation workers N1 - At head of title: Radiation protection; 'Adopted by the Commission in November 1969.'; Bibliography: p. 33 ER -