CONTENTS
Kubíček F.
The 70th Birthday of Associate Professor RNDr. Věra Opravilová, CSc....................  1
Kubíček F.
Bibliography of Publications by Associate Professor RNDr. Věra Opravilová, CSc..... 5
Žákova Z., Opravilová V., Schenková J. & Mlejnková H. Occurrence of Freshwater Sponges (Porifera, Spongillidae) and Sponge-associated Organisms in the Dalešice and Mohelno Reservoirs (Czech Republic)....................   9
Tajmrová L. & Uvíra L.
Testing the Differences between Caddisfly Communities Inhabiting Moss and Gravel
Substrates .......................................................................................... 43
Omesová M. & Helešic J.
On the Processing of Freeze-core Samples with Notes on the Impact of Sample Size.. 59
Instructions to Authors........................................................................... 67
ISBN 80-210-3554-4                                                           55-960B-2004 02/58 9/Př