A case of extensive chronic empyema of the frontal and ethmoidal sinuses with exophthalmos : operation; recovery / by Arnold H. Knapp.
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A case of extensive chronic empyema of the frontal and ethmoidal sinuses with exophthalmos : operation; recovery / by Arnold H. Knapp. Credit: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London). Public Domain Mark