First aid dentistry / by E. P. R. Ryan ... with eighty illustrations.
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First aid dentistry / by E. P. R. Ryan ... with eighty illustrations. Credit: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.. Public Domain Mark