TY  - RPRT
TI  - Approximate procedures for calculating protection from initial nuclear radiation from weapons 
AU  - Eisenhauer, C M
AU  - Spencer, L V
PY  - 1987
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 87-3507
DO  - 10.6028/NBS.IR.87-3507
ER  -