X-rays simply explained : a handbook on the theory and practice of radiography / by R.P. Howgrave-Graham.
- Howgrave-Graham, R. P. (Robert Pickersgill), 1880-
- Date:
- [between 1900 and 1909]
Licence: In copyright
Credit: X-rays simply explained : a handbook on the theory and practice of radiography / by R.P. Howgrave-Graham. Source: Wellcome Collection.
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