00963nam a2200265 i 450099100119051970753620020507112644.0970308s1976 uk ||| | eng b10186256-39ule_instLE00643654ExLDip.to Fisicaita53.9.788RA1231International Commission on Radiological Protection298334Protection against ionizing radiation from external sources /ICRPOxford :Pergamon,19761 v. :ill. ;25 cm.RadiationRadiation protection.b1018625621-09-0627-06-02991001190519707536LE006 53.9.7 ICR12006000056243le006-E0.00-l- 00000.i1022902427-06-02Protection against ionizing radiation from external sources190277UNISALENTOle00601-01-97ma -enguk 01