Handbook of mammographic x-ray spectra /

Mode of access: Internet.

The extension of the X-ray spectrum to the ultraviolet ...

Reprinted from the Physical review n.s. v.18, no.6. Dec.1921.

X ray wavelengths /

"Contract No. AT(30-1)-2543."

Applications of X-ray spectroscopy to solid state problems. 22-25 October1950.

Mode of access: Internet.