EDITORIAL; pp. 3–4

CHANGES IN THE TEXTURE AND EXCHANGE PROPERTIES OF SKELETAL QUARRY DETRITUS UNDER FOREST DURING THIRTY YEARS; pp. 5–13

DISTRIBUTION OF MYSIDS ON BANK SLOPES IN THE GULF OF RIGA; pp. 14–21

THE EFFECT OF CYTOKININ TYPE AND CONCENTRATION AND THE NUMBER OF SUBCULTURES ON THE MULTIPLICATION RATE OF SOME DECORATIVE PLANTS; pp. 22–32

SENSITIVITY OF PLATELETS TO PROSTAGLANDINS IN PATIENTS WITH CORONARY ARTERY DISEASE; pp. 33–36

LAND SNAILS IN AN AFFORESTED OIL-SHALE MINING AREA; pp. 37–41