@misc{1175181, author = {C M Eisenhauer and L V Spencer}, title = {Approximate procedures for calculating protection from initial nuclear radiation from weapons:}, year = {1987}, month = {1987-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.87-3507}, language = {en}, }