United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 176
Fig. 21. Vergelys method. [Distinctivemarks transferred to card.\ Fig. 22. Vergelys method.Completed chart. 169 170 X-RAY MANUAL—U. S. ARMY upon a sheet of paper on which the margin of the open-ing is traced as are also the distinctive marks. Thesemarks are now connected by pencil lines -|- to -f-…
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