A comparative ecological investigation of two related mayfly nymphs Bent Lauge Madsen OriginalPaper 01 July 1968 Pages: 337 - 349
The most common fungi in biological treatment plants Alena SladkaVlasta Ottová OriginalPaper 01 July 1968 Pages: 350 - 362
Observations on the biology of Glossiphonia heteroclita (L.) Jane Hatto OriginalPaper 01 July 1968 Pages: 363 - 384
Tintinnidium ephemeridum n. sp. A new freshwater tintinnid from Alaska with notes on the algae attached to its test Douglas K. Hilliard OriginalPaper 01 July 1968 Pages: 385 - 401
Die organische drift des Svratka-Flusses im abschnitt zwischen zwei talsperren (Vír, Kníničky) František Kubíček OriginalPaper 01 July 1968 Pages: 402 - 416
Relation entre poids frais et poids sec chez quelques invertébrés d'eau douce Eric Pattee OriginalPaper 01 July 1968 Pages: 417 - 420
Studies on the phytoplankton and other algae of Indrasagar tank, Udaipur, India L. N. VyasH. D. Kumar OriginalPaper 01 July 1968 Pages: 421 - 434
Description d'une méthode d'élevage des chironomides adaptée aux pays tropicaux OriginalPaper 01 July 1968 Pages: 435 - 441
Hydrobiological studies of the river sabarmati to evaluate water quality T. VenkateswarluT. V. Jayanti OriginalPaper 01 July 1968 Pages: 442 - 448
Contribution à l'étude des premiers états des Chironomides du Tchad C. Dejoux OriginalPaper 01 July 1968 Pages: 449 - 464
Contribution to the marine algae from the coast of West Pakistan III. Marine Vaucheria from Karachi Mohammed Nizamuddin OriginalPaper 01 July 1968 Pages: 465 - 473
Comparative species composition of limnetic planktonic crustacean communities in south-east Queensland, Australia B. V. Timms OriginalPaper 01 July 1968 Pages: 474 - 480
Water renewal in reservoirs, and its relation to body size and egg numbers in copepods B. V. Timms OriginalPaper 01 July 1968 Pages: 481 - 491
A preliminary report on the hydrobiology of Beypore river for the year 1964 Varkey JohnK. M. Alexander OriginalPaper 01 July 1968 Pages: 492 - 496
Studies on chrysophyceae from some ponds and lakes in Alaska vi occurrence of synura species Berit Asmund OriginalPaper 01 July 1968 Pages: 497 - 515
Winterschichtung 1965/66 in zwölf waldviertler fischteichen Friederike Wawrik OriginalPaper 01 July 1968 Pages: 516 - 544
Quelques nouvelles données sur le phytoplancton marin et la production primaire à Tuléar (Madagascar) A. Sournia OriginalPaper 01 July 1968 Pages: 545 - 560
Studies on dyes found in Chlorobium limicola Nads. (Chlorobacteriaceae) from the Wadolek lake Bazyli CzeczugaRomuald Czerpak OriginalPaper 01 July 1968 Pages: 561 - 571
Studies on Manganese uptake in Tilapia mossambica and Salmo gairdnerii Mounir M. IshacAlexander M. Dollar OriginalPaper 01 July 1968 Pages: 572 - 584
The role of zooplankton on the self-purification in water bodies N. M. Kryutchkova OriginalPaper 01 July 1968 Pages: 585 - 595