Radiation protection in educational institutions. - Washington : NCRP, 1966. - v, 56 p. : tabla, diagr. - Report, no.<32> . - Estados Unidos. National council on radiation protection and measurements . - Report, no.<32> . Recommendations of the NCRP ApĂ©ndices, bibliografĂa y glosario: p.32-41 ISSN: 0083-209X Standard No.: NCRP-REPORT-32