ESTONIAN ENCHYTRAEIDAE (OLIGOCHAETA)
1. Terrestrial Enchytraeidae from the Võrtsjärv Limnological Station and from Puurmani; pp. 235–246

POLLEN INFLUX IN LAKE MATSIMÄE AND ITS CATCHMENT; pp. 247–258

THE EFFECT OF FLUCTUATING WATERLEVEL ON THE ZOOPLANKTON OF LAKE VÕRTSJÄRV, CENTRAL ESTONIA; pp. 259–267

STRATIFICATION OF ESTONIAN LAKES STUDIED DURING HYDROOPTICAL EXPEDITIONS IN 1995–1997; pp. 268–281

MICELLE-WATER PARTITIONING OF PHENANTHRENEIN AQUEOUS SURFACTANT SOLUTIONS; pp. 282–295