1. Contributions to the diatom flora of South Africa

   • Malcolm H. Giffen

   OriginalPaper Pages: 201 - 265

2. Comments on the species of the genus Tetrapedia Reinsch (Chroococcaceae, Cyanophyta)

   • G. Claus

   OriginalPaper Pages: 266 - 274

3. Hydrobiological studies with reference to sudden fish mortality

   • K. P. Krishnamoorthy
   • G. Visweswara

   OriginalPaper Pages: 275 - 303

4. Rhizopoden aus alten, ausgetrockneten Moosproben

   • Miroslav Štěpánek

   OriginalPaper Pages: 304 - 327

5. Contribution à l'étude de l'adaptation des Tilapia (Pisces Cichlidae) à la vie en milieu mal oxygéné

   • J. Dusart

   OriginalPaper Pages: 328 - 341

6. Die mikroklimatischen Verhältnisse in der wassernahen Luftschicht

   • Jochen Hild

   OriginalPaper Pages: 342 - 354

7. Hydrobiological studies on the Tugela River system

   • W. D. Oliff

   OriginalPaper Pages: 355 - 379

8. Two new Keratella, rotatoria, from Australia

   • Bruno Bērzinś

   OriginalPaper Pages: 380 - 383

9. The life and hydrobiological work of R. Šrámek-Hušek

   • Vladimír Sládeček

   OriginalPaper Pages: 384 - 389

10. Bibliography

    Legacy Pages: 390 - 392