Exposure of the U.S. population from diagnostic medical radiation. - Bethesda, Md. : NCRP, 1989. - v, 105 p. : tabla, diagr. - Report, no.<100> . - Estados Unidos. National council on radiation protection and measurements . - Report, no.<100> . Recommendations of the NCRP ApĂ©ndice y bibliografĂa: p.73-83 ISBN: 0929600010 ISSN: 0083209X Standard No.: NCRP-REPORT-100