| 1. | Editor's Page | 97 |
| 2. | Ilmar Öpik | 99-102 |
| 3. | Professor Ilmar Öpik - a symbol of Estonian engineering mind | 103-108 |
| 4. | V. Yefimov, S. Doilov, I. Pulemyotov, V. Omelyanenko, S. Yefimov. Experimental oil shale retort with separate take-off of oil vapours and gasification gas | 109-114 |
| 5. | Yu. Rundygin, G. Alfimov, A. Rundygin, J. Maarend, K. Grigoryev,Yu. Arkhipov, R. Kuusik. Possibilities of deeper desulfurization of flue gases by oil shale ash components in different burning technologies | 115-131 |
| 6. | V. Fainberg, G. Hetsroni, T. Feiglin, A. Schwartz. High-sulfur shale oil as a component of rubber stocks | 133-142 |
| 7. | M. Starshov, I. Starshov, Yu. Rakutin. Extraction of natural bitumen from bituminous carbonate rocks (Summary) | 143-153 |
| 8. | A. Toomik, T. Tomberg. Blast vibrations in oil shale surface mining | 155-162 |
| 9. | L. Pets. Depositions of macro- and microelements from atmospheric emission of oil shale ashes in northeastern Estonia (Summary) | 163-170 |
| Archives | ||
| 10. | R. Uuesoo. Combustion of spent shale in fluidized bed | 171-183 |
| People | ||
| 11. | Werner Kikas - 80 | 185 |
| Informatsioon | ||
| 12. | RAS Kiviter | 186 |
| 13. | Journal Ecological chemistry | 187 |
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