1

On Objective Tests

Year:
1950
Language:
english
File:
PDF, 396 KB
english, 1950
2

A Spring Suspended and Thermostated Littrow Spectrograph

Year:
1938
Language:
english
File:
PDF, 226 KB
english, 1938
4

and HD

Year:
1937
Language:
english
File:
PDF, 288 KB
english, 1937
5

Interferometer Wave-Lengths in the Secondary Spectrum of Hydrogen

Year:
1937
Language:
english
File:
PDF, 260 KB
english, 1937