Conceptual basis for calculations of absorbeddose distributions. - Bethesda, Md. : NCRP, 1991. - viii, 234 p. : tabla, diagr. - Report, no.<108> . - Estados Unidos. National council on radiation protection and measurements . - Report, no.<108> . Recommendations of the NCRP ApĂ©ndices y bibliografĂa: p.93-215 ISBN: 0929600169 ISSN: 0083209X Standard No.: NCRP-REPORT-108