1. Influence of the salinity and the oxygen content in the external medium upon the respiration of the snail Theodoxus fluviatilis (L.);Bielawski;Acta Biologiae Experimentalis,1960
2. Preliminary investigations into the development of Neritina fluviatilis L. in brackish and fresh water;Bondesen;Videnskabelige Meddelelser fra Dansk Naturhtstorisk Forming i Kjøbenhavn,1940
3. Die Verbreitungsverhältnisse der Limnischen Gastropoden in Südschweden;Hubendick;Zoologiska Bidrag fran Uppsala,1947
4. Die Mollusken der Schlei;Jaeckel;Archiv für Hydrobiologie,1950
5. Littoral stony-bottom invertebrates in the Krunnit area of the Bothnian Bay;Kangas;Acta Universitatis Ouluensis A,1976