1. Etude hydrobiologique des lagunes du nord de la Tunisie

   • B. Savouré

   OriginalPaper 01 January 1978 Pages: 3 - 10

2. Studies on intestinal protease: Isolation, purification and effect of dietary proteins on alkaline protease activity of the air-breathing fish, Clarias batrachus (Linn.)

   • Pratap K. Mukhopadhyay
   • Padmakar V. Dehadrai
   • Sudip K. Banerjee

   OriginalPaper 01 January 1978 Pages: 11 - 15

3. Species composition, diversity, biomass, and chlorophyll of periphyton in greasy creek, red rock creek, and the Arkansas River, Oklahoma

   • Jerry Wilhm
   • James Cooper
   • Harold Namminga

   OriginalPaper 01 January 1978 Pages: 17 - 23

4. On structure and functioning of ecosystem in a Salmon lake

   • Yu. I. Sorokin
   • E. B. Paveljeva

   OriginalPaper 01 January 1978 Pages: 25 - 48

5. Estimation of cardiac output and stroke volume from thermal equilibration and heartbeat rates in fish

   • William W. Reynolds
   • Martha E. Casterlin

   OriginalPaper 01 January 1978 Pages: 49 - 52

6. Implication of a hormonal principle in thermal acclimation of the indian freshwater leech, poecilobdella viridis (blanchard): Influence of brain homogenate on oxygen consumption

   • G. K. Kulkarni
   • R. Nagabhushanam
   • M. M. Hanumante

   OriginalPaper 01 January 1978 Pages: 53 - 55

7. Saprobic sequence within the genus euglena

   • Vladimír Sládeček
   • Jindřich Perman

   OriginalPaper 01 January 1978 Pages: 57 - 58

8. Errors in the estimation of recruitment of early stages of mesocyclops leuckarti (claus) caused by the diurnal periodicity of egg-production

   • Moshe Gophen

   OriginalPaper 01 January 1978 Pages: 59 - 64

9. Time dependent cadmium uptake by fathead minnows (Pimephales promelas) during field and laboratory exposure

   • Jacquelyn F. Sullivan
   • Brian R. Murphy
   • Alan W. McIntosh

   OriginalPaper 01 January 1978 Pages: 65 - 68

10. Seasonal variation in the biochemical composition of Mytilus viridis at Ratnagiri on the West Coast of India

    • R. Nagabhushanam
    • U. H. Mane

    OriginalPaper 01 January 1978 Pages: 69 - 72

11. Studies on the freshwater algae of the Sudan III, vertical distribution of Melosira granulata (Ehren.) Ralfs. in the White Nile, with reference to certain environmental variables

    • A. G. Abdel Karim
    • O. M. Saeed

    OriginalPaper 01 January 1978 Pages: 73 - 79

12. Observations on the settling of Simulium damnosum larvae on artificial substrates, in the Ivory Coast

    • R. O. Hall
    • A. J. Edwards

    OriginalPaper 01 January 1978 Pages: 81 - 84

13. The populations of fish in tributaries of the River Eden on the Moor House National Nature Reserve, northern England

    • D. T. Crisp
    • P. R. Cubby

    OriginalPaper 01 January 1978 Pages: 85 - 93

14. Libri novi

    BookReview 01 January 1978 Pages: 95 - 96