1. Index autorum

   Legacy 01 February 1973 Pages: iv - iv

2. In memoriam Záviš Cyrus

   Legacy 01 February 1973 Pages: 1 - 2

3. Observations on the transparency of the waters of the Pulicat Lake with particular reference to plankton production

   • M. Kaliyamurthy

   OriginalPaper 01 February 1973 Pages: 3 - 11

4. The effects of pollution on Gammarus pulex (L) subsp, pulex (Schellenberg) in the inlet streams of Rostherne Mere, Cheshire

   • John E. Hobrough

   OriginalPaper 01 February 1973 Pages: 13 - 35

5. The relations between mites of the genus Unionicola and the mussels Anodonta and Unio

   • C. Davids

   OriginalPaper 01 February 1973 Pages: 37 - 44

6. Phytoplankton observations in the Eastern Caribbean Sea

   • Harold G. Marshall

   OriginalPaper 01 February 1973 Pages: 45 - 55

7. Hämatologische beobachtungen an regenbogenforellen (Salmo gairdneriRich.) VII. Färbeindex (FI), absoluter Hämoglobingehalt des Einzelerytrozyten (Hb_E) and mittlere Hämoglobinkonzentration des Einzelerythrozyten (MCHC)

   • Gerhard Haider

   OriginalPaper 01 February 1973 Pages: 57 - 76

8. Growth of a floating aquatic weed, Salvinia under standard conditions

   • John J. Gaudet

   OriginalPaper 01 February 1973 Pages: 77 - 106

9. Study of the changes in the structure of two algal populations: an r-type factor analysis

   • F. Symons

   OriginalPaper 01 February 1973 Pages: 107 - 112

10. Carotenoids in fish II. Carotenoids and vitamin A in some fishes from the coastal region of the Black Sea

    • B. Czeczuga

    OriginalPaper 01 February 1973 Pages: 113 - 125

11. Effect of Phormidium extract on growth and yield of Vigna catjang (Cowpea) T. 5269

    • A. B. Gupta
    • K. K. Gupta

    OriginalPaper 01 February 1973 Pages: 127 - 132

12. Libri Novi

    BookReview 01 February 1973 Pages: 133 - 143