| RGO Archives/RGO 9 contains: |
|---|
| <-- See earlier |
|---|
| 143 |
Papers on the Yapp 36-inch Telescope. |
| 144 |
Papers on the spectrograph instrument. |
| 145 |
Papers on the Schmidt Telescope |
| 146 |
Papers on the reversible transit circle |
| 147 |
Papers on cosmic ray instruments |
| 148 |
Papers on the S.P.A. Recorder |
| 149 |
Papers on the spectroheliograph and spectrograph |
| 150 |
Papers on an iris diaphragm stellar photometer |
| 151 |
Papers on a measuring machine |
| 152 |
Papers on the Neutron Monitor |
| 153 |
Papers on the Braunbek Coil System |
| See later --> |
|---|
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