United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 135
Fig. 1. Dessanes fluoroscope attached to the head ready for examination. … Fig. 2. Dessanes fluoroscope elevated to the top of the head after th Ifluoroscopic examination has been made, permitting the operator to see b: |ordinary light without losing the sensibility of the retina because of a ruby glas jwhich automatically drops in front of the eyes as the fluoroscope is…
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