@misc{1191666, author = {Leon F Curtiss}, title = {Circular of the Bureau of Standards no. 476::measurements of radioactivity}, year = {1949}, month = {1949-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.CIRC.476}, language = {en}, }