1. Manayunkia speciosa Leidy — a fresh-water polychaete found in Northern Alaska

   • Charlotte Holmquist

   OriginalPaper 01 May 1967 Pages: 297 - 304

2. Le Nannoplancton des Côtes d'Israël

   • J. Lecal

   OriginalPaper 01 May 1967 Pages: 305 - 387

3. Obsevations on the effect of feeding Labeo rohita (Ham.) with Microcystis aeruginosa Kütz

   • Mirza Rashid Ahmad

   OriginalPaper 01 May 1967 Pages: 388 - 388

4. Hydrobiological studies on the Tugela River system, Part VI-acidic drainage from Mines in the natal coalfields

   • P. H. Kemp

   OriginalPaper 01 May 1967 Pages: 393 - 425

5. Osmotic regulation in juvenile oncorhynchus kisutch (Walbaum)-I

   • A. G. Coche

   OriginalPaper 01 May 1967 Pages: 426 - 440

6. Observations in guanotrophic environments

   • P. Leentvaar

   OriginalPaper 01 May 1967 Pages: 441 - 489

7. Mise en évidence d'un rythme endogène annuel dans la réactivité de la carpe à un apport adrénalinique

   • M. Waitzenegger
   • A. Serfaty

   OriginalPaper 01 May 1967 Pages: 490 - 494

8. A water-current respirometer

   • C. H. Eriksen
   • C. R. Feldmeth

   OriginalPaper 01 May 1967 Pages: 495 - 504

9. Biological investigations of an infiltration area and experiments with some algicides

   • Věra Moravcová

   OriginalPaper 01 May 1967 Pages: 505 - 546

10. Zooplankton of Lake Titicaca on the Bolivian side

    • Masuzo Uéno

    OriginalPaper 01 May 1967 Pages: 547 - 568

11. Bibliography

    Legacy 01 May 1967 Pages: 569 - 576