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1. Development of the european crayfish Astacus astacus [1.] and the american crayfish Pacifastacus leniusculos [dana] populations in a small finnish lake / Kai Westman, Markku PursiainenPublication: Helsinki : 1978, Finnish Game and Fisheries Research Institute. Fisheries DivisionDescription: p. 243-250 : il. ; 22 cmAvailability: Items available for loan: Biblioteca de Algés[02645-S] (1).

2. Electric fishing in sampling crayfish / Kai Westman, Olli Sumari, Markku PursiainenPublication: Helsinki : 1978, Finnish Game and Fisheries Research Institute. Fisheries DivisionDescription: p. 251-256 ; 22 cmAvailability: Items available for loan: Biblioteca de Algés[02646-S] (1).

3. A new folding trap model which prevents crayfish from escaping / Kai Westman, Markku Pursiainen, Raimo VilkmanPublication: Helsinki : 1978, Finnish Game and Fisheries Research Institute. Fisheries DivisionDescription: p. 235-242 : il. ; 22 cmAvailability: Items available for loan: Biblioteca de Algés[02644-S] (1).

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