Neutron fluence, neutron spectra, and kerma. - Washington ICRU 1969 - viii, 57 p. ill. 28 cm. - ICRU report 13 International Commission on Radiation Units and Measurements. 13 . Bibliography: p. 44-52. Subjects--Topical Terms: Neutrons--Measurement.Radiation--Measurement.Units. LC Class. No.: QC793.5.N4622 RA1231.R2 / I55 no. 13 Dewey Class. No.: 539.7213 INT 1969