"Écologie benthique Danemark." . . "Limnologie Danemark Esrom, Lac." . . "Limnologie - Danemark - Esrom, Lac." . "Biological productivity." . . "Phytoplankton." . . "Benthos." . . "Freshwater ecology." . . . . . . "Ecology and production of the profundal benthos in relation to phytoplankton in Lake Esrom" . "Ecology and production of the profundal benthos in relation to phytoplankton in Lake Esrom"@en . . . . . . . "Ecology and production of the profoundal benthos in relation to phytoplankton in Lake Esrom"@da . . . . . . . . . . . "Ecology and production of the profundal benthos in relation to phytoplankton in lake Esrom" . . . . . . . . . . "Ecology and production of the profundal benthos in relation to phytoplankton in Leke Esrom" . . . . . . "Écologie d'eau douce Danemark Esrom, Lac." . . "Écologie d'eau douce - Danemark - Esrom, Lac." . "Diversité biologique Conservation des ressources Danemark." . . "Ökologie." . . "Phytoplancton d'eau douce Danemark." . . "Évaluation écologique (biologie) Danemark." . . "Productivité biologique Danemark Esrom, Lac." . . "Productivité biologique - Danemark - Esrom, Lac." . . . "Limnology." . . "Naturhistorie" . .