OIL SHALE FROM CALDERA LAKES OF DIATREMES; pp. 185–192

FOULING AND CORROSION OF HEAT TRANSFER SURFACES OF FB BOILERS BURNING ESTONIAN OIL SHALE; pp. 193–202

THE EFFECT OF SUBSURFACE MINING ON THE LAND SURFACE AND PRELIMINARY CALCULATION OF PILLARS; pp. 203–213

OIL SHALE RESORCINOLS – EFFECTIVE REAGENTS FOR NITRITE.
AN ALGORITHM FOR THE CONCENTRATION EFFECT; pp. 215–222

DEFOLIATION OF SCOTS PINE AND NORWAY SPRUCE UNDER ALKALINE DUST IMPACT AND ITS RELATIONSHIP WITH RADIAL INCREMENT; pp. 223–237

CHARACTERIZATION OF BALTIC SEA DISSOLVED ORGANIC MATTER AS OIL SHALE PRECURSOR BY SEPARATION AND FRACTIONATION BY ADSORPTION CHROMATOGRAPHIC XAD METHOD, AND SIZE EXCLUSION CHROMATOGRAPHY; pp. 239–257

EXTRACTION OF URANIUM FROM LOCAL DICTYONEMA SHALE AT SILLAMÄE IN 1948–1952; pp. 259–271