@article{doi:10.1001/archpedi.1939.01990040081005,
author = {FRANCIS CC},
title = {FActors influencing appearance of centers of ossification during early childhood},
journal = {American Journal of Diseases of Children},
volume = {57},
number = {4},
pages = {817-830},
year = {1939},
doi = {10.1001/archpedi.1939.01990040081005},
URL = { + http://dx.doi.org/10.1001/archpedi.1939.01990040081005},
eprint = {/data/Journals/PEDS/23943/archpedi_57_4_005.pdf}
}