@article{doi:10.1001/jama.1909.02550060050022, title = {AN introduction to the science of radio-activity.}, journal = {Journal of the American Medical Association}, volume = {LIII}, number = {6}, pages = {474}, year = {1909}, doi = {10.1001/jama.1909.02550060050022}, URL = { + http://dx.doi.org/10.1001/jama.1909.02550060050022}, eprint = {/data/Journals/JAMA/10307/jama_LIII_6_022.pdf} }