1. 1969
  2. A new station of Ophelia rathkei McIntosh in northern France

    Wolff, W. J., 1969, In : Cahiers de Biologie Marine. 10, 1, p. 83-84

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

  3. A population study of the cyprinids present in Tjeukemeer

    Goldspink, C. R., 1969, In : Contactblad voor Oecologen. 5, p. 43-45

    Research output: Contribution to journal/periodicalArticlePopularizing

  4. A study of a population of Marinogammarus marinus (Leach) in the Oosterschelde

    Vlasblom, A. G., 1969, In : Netherlands Journal of Sea Research. 4, p. 317-338

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

  5. Availability of mud phosphates for the growth of algae

    Golterman, H. L., Bakels, C. C. & Jakobs-Mogelin, J., 1969, In : Verhandlungen Internationale Vereinigung für theoretische und angewandte Limnologie. 17, p. 467-479

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

  6. Balanus amphitrite Darwin in Nederland (Crustacea, Cirripedia). (Balanus amphitrite Darwin in the Netherlands (Crustacea, Cirripedia))

    Borghouts-Biersteker, C. H., 1969, In : Zoölogische bijdragen. 11, p. 4-7

    Research output: Contribution to journal/periodicalArticlePopularizing

  7. Chironomid investigations in the 'open water' of Tjeukemeer

    Beattie, D. M., 1969, In : Contactblad voor Oecologen. 5, p. 36-39

    Research output: Contribution to journal/periodicalArticlePopularizing

  8. Colonization of the mole (Talpa europaea L.) in the IJsselmeerpolders

    Haeck, J., 1969, In : Netherlands Journal of Zoology. 19, p. 145-248

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

  9. De eutrofiering van het ijsselmeer

    Golterman, H. L. & De Kloet, W. A., 1969, In : Mededelingenblad van de Hydrobiologische Vereniging. 3, 1, p. 7-9

    Research output: Contribution to journal/periodicalArticlePopularizing

  10. De levenscyclus van Chaoborus crystallinus (De Geer) (Diptera, Chaoboridae) in een Nederlandse vijver (Abstract)

    Parma, S., 1969, In : Mededelingenblad van de Hydrobiologische Vereniging. 3, 3, p. 64-66

    Research output: Contribution to journal/periodicalArticlePopularizing

  11. De mens en zijn milieu

    Perdeck, A. C., 1969, In : Natuur en Landschap. 23, p. 56-67

    Research output: Contribution to journal/periodicalArticlePopularizing