| No. | P. | ||
| 1. | R. Bogdanov, E. Lippmaa, S. Ozernaya, A. Pihlak. Isotopic abundance of uranium(IV) and uranium(VI) species in leachants of graptolitic argillites (Summary) | 2 | 125-131 |
| 2. | E. Bondar, M. Kuusik, M. Bityukov. Peculiarities of oil shales deposition in the Silurian. 2.The composition of insoluble organic matter of Anabar oil shales (Low Llandowery) by thermal destruction data (Summary) | 3 | 238-248 |
| 3. | B. Gubnitsky. Natural factors in the formation of bituminous accumulations in the southeast of the Volga-Kama arch (Summary) | 3 | 231-237 |
| 4. | H. Holopainen. Experience of oil shale combustion in ahlstrom pyroflow CFB-boiler | 3 | 194-209 |
| 5. | V. Kattai. Comparative analysis of the quality and technological characteristics of oil shale from the largest deposits in the U.S.S.R. European part (Summary) | 2 | 106-115 |
| 6. | V. Kattai, E. Reinsalu. Main geological-industrial features and economic value of the Tapa kukersite deposit (Summary) | 3 | 220-230 |
| 7. | G. Kharin, V. Kyrwel. Lithological-geochimical comparison of Lower-Ordovician kerogen-bearing rocks on the Estonian mainland and the Baltic sea bottom (Summary) | 4 | 306-315 |
| 8. | G. Khrustalyova, N. Cherkashin, N. Pogrebnova. The composition and quality of Lower-Eocene oil shales of the Samarkand District (Uzbekistan) (Summary) | 1 | 2-12 |
| 9. | A. Lapo, M. Vdovets. Heavy metals in the environment of the Kohtla-Järve area, Estonia | 2 | 169-176 |
| 10. | E. Maremäe, I. Johannes, V. Ahelik. The percolative leaching of alum shale's sulphated ashes (Summary) | 2 | 138-147 |
| 11. | E. Maremäe, L. Ründal, V. Ahelik. Study of the process of multistage leaching of alum shale's sulphated ashes (Summary) | 1 | 27-38 |
| 12. | E. Maremäe H. Taal. Metal extraction from alum shale ashes under the effect of ammonium sulphate | 4 | 337-341 |
| 13. | L. Maripuu, J. Arro. Application of inverse gas-liquid
chromatography to elucidating thermo- dynamic properties of high-boiling oils (Summary) |
4 | 324-332 |
| 14. | B. Naumov. Pollution of hydrosphere by leaching of dictyonema shale in waste dumps of the Maardu openpits (Summary) | 3 | 266-274 |
| 15. | Peng Dehong, Qian Jialin. Oil shale activities in China | 2 | 97-105 |
| 16. | L. Pets, P. Vaganov, E. Turbas, I. Shtangeeva, S. Felitsyn. Influence of chalking by dust-like oil-shale ash on meadow grass microelements concentration | 1 | 60-66 |
| 17. | E. Reinsalu. Economical development of Estonian oil shale industry | 3 | 275-280 |
| 18. | A. Rulkov, A. Levin, V. Terras. Proximate method for diagnosing rock strength (Summary) | 4 | 316-323 |
| 19. | I. Shtein, V. Kattai, R. Veski. Use of Karelian shungites for the grit of the roofing material (Summary) | 4 | 342-349 |
| 20. | V. Sidorkin, A. Kniga, N. Rakitina. The opportunity of NOx emissions reduction for the pulvarized oil shale fired boilers | 4 | 355-359 |
| 21. | M. Starshov, I. Starshov. Selective extraction of natural bitumen (Summary) | 1 | 46-49 |
| 22. | A. Sumberg, K. Urov. The effect of quartz on the yield and composition of kukersite semicoking products | 1 | 13-18 |
| 23. | J. Teder, N. Vink, L. Nappa. Treatment of Lipovetsk liptobiolith with ammonia (Summary) | 1 | 19-26 |
| 24. | L. Tiikma, L. Mölder. The selective extraction of monoatomic phenols from oil-shale tar water by the benzine fraction (Summary) | 2 | 148-157 |
| 25. | L. Tiikma, L. Mölder, H. Tamvelius. Resources of water-soluble alkylresorcinols in the oil fractions and retort water formed by processing oil shale in generators of high unit capacity | 4 | 350-354 |
| 26. | K. Urov, V. Vysotskaya. Influence of halloysite on the thermal decomposition of kukersite kerogen (Summary) | 4 | 333-336 |
| 27. | R. Veski, S. Sidorova, H. Taal, L. Pobul. Investigation of Tutonchana oil shale. 3. Oxidative and thermo-oxidative destruction data (Summary) | 2 | 116-124 |
| 28. | V. Võssotskaja, K. Urov. The effect of kaolinite on the yield and composition of kukersite semicoking products (Summary) | 3 | 249-257 |
| 29. | Wang Jianqui, Zhang Qi. Comparison of combustion behaviour between oil shale and coal under atmospheric and elevated pressure | 3 | 210-219 |
| 30. | V. Yefimov, H. Kundel. Specific features of kukersite processing in laboratory-scale and commercial retorts (Summary) | 2 | 158-168 |
| 31. | V. Yefimov, N. Nazinin, E. Piik, R. Lööper. Oil shale generators with circular retorting chamber | 1 | 50-59 |
| 32. | S. Yevstafyev, S. Chlopov, V. Tuturina. Thermodissolution of Budagovo sapropelite at high temperatures (Summary) | 1 | 39-45 |
| 33. | S. Yevstafyev, S. Plyusnin, A. Vereshchagin, N. Lindinau, V. Tuturina. Relic structures in organic substance of gelite-sapropelite | 2 | 132-137 |
| 34. | S. Yevstafyev, S. Plyusnin, A. Vereshchagin, N. Lindinau,
V. Tuturina. Polycyclic hydro- carbons in pyridine extract of sapropelite (Summary) |
3 | 258-265 |
| Reviews | |||
| 35. | A. Gulliford. The oil shale boom & bust in the American West | 2 | 177-184 |
| 36. | I. Öpik. Scale up risk of developing oil shale processing units | 1 | 67-74 |
| 37. | I. Öpik. Electricity or oil from Estonian oil shale - an old problem | 3 | 281-285 |
| In memorium | |||
| 38. | In memory of professor Paul Nikolai Kogerman (1891-1951) | 4 | 289 |
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