VICTOR YEFIMOV – OVER 40 YEARS WITH THE INSTITUTE OF OIL SHALE; pp. 257–260

THE RETROSPECTIVE ASSESSMENT OF BLAST VIBRATION IMPACT ON THE ENVIRONMENT AT OPENCAST MINING; pp. 261–266

ПЕРСПЕКТИВНОЕ НАПРАВЛЕНИЕ УВЕЛИЧЕНИЯ РЫНКА СБЫТА СЛАНЦЕВЫХ МАСЕЛ И УЛУЧШЕНИЯ КАЧЕСТВА НЕФТЯНЫХ МАЗУТОВ; pp. 267–275

CARBON DIOXIDE BINDING IN THE HETEROGENEOUS SYSTEMS FORMED AT COMBUSTION OF OIL SHALE
3. TRANSFORMATIONS IN THE SYSTEM SUSPENSION OF ASH – FLUE GASES; pp. 277–288

CRITERIA OF REPAIRING TUBE SURFACE DAMAGES BY OVERLAY WELDING; pp. 289–296

IMPACT OF OIL SHALE MINE WATER DISCHARGES ON PHYTOPLANKTON COMMUNITY OF PURTSE CATCHMENT RIVERS; pp. 297–306

IMPACT OF OIL SHALE FLY ASH EMITTED FROM A POWER PLANT ON RADIAL GROWTH OF SCOTS PINE IN NORTH-EAST ESTONIA; pp. 307–319

ABOUT THE MINERALOGICAL COMPOSITION OF ESTONIAN OIL SHALE ASH; pp. 321–333

SCIENCE IN ESTONIA THROUGH THREE OCCUPATIONS; pp. 335–349