Keywords: Radix balthica (Lymnaeidae sp.), Elst (Gld), the Netherlands.jpg en Radix balthica Lymnaeidae sp Elst Gld the Netherlands nl Radix balthica Ovale poelslak Elst Gld Nederland 2014-02-26 12 00 00 own Bj schoenmakers thumb left 120px 51 9423601356 5 84756635129 cc-zero Radix balthica Mollusca of the Netherlands |