@article{doi:10.1001/jama.1919.02610120025012,
author = {RICHARDSON R},
title = {PNeumococcus types in rural districts},
journal = {Journal of the American Medical Association},
volume = {72},
number = {12},
pages = {863},
year = {1919},
doi = {10.1001/jama.1919.02610120025012},
URL = { + http://dx.doi.org/10.1001/jama.1919.02610120025012},
eprint = {/data/Journals/JAMA/5603/jama_72_12_012.pdf}
}