| 1 | |
| 2 | Infrared spectra and some other physico-chemical properties of soils and clay minerals |
| Language: | English |
| 3 | |
| 4 | Investigations of certain reactions relating to upper atmospheric physics |
| Language: | English |
| 5 | |
| 6 | |
| Language: | English |
| 7 | Investigation of the upper regions of the terrestrial atmosphere |
| 8 | |
| Language: | English |
| 9 |